> Markdown for /glossary. Visit the full page for interactive content.

# Glossary

Definitions of key SEO and GEO terms.

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### Model Probe Result

The output of a model probe test, including the AI's full response text, whether the brand was mentioned, which competitors were mentioned, the mention type ...

July 11, 2026

](/glossary/model-probe-result)[

### Engine Format Preferences

The tendency of different AI engines to prefer certain content formats when selecting sources to cite. ChatGPT favours long-form guides, Gemini favours struc...

July 11, 2026

](/glossary/engine-format-preferences)[

### Mention Type

The classification of how a brand appears in an AI response: citation (direct reference with source link), recommendation (actively suggested), incidental (b...

July 11, 2026

](/glossary/mention-type)[

### Model Probe

A structured query sent to AI models to test whether a brand, domain, or specific content is cited in the response. Model probes are used in the Topicker AI ...

July 11, 2026

](/glossary/model-probe)[

### AI Overview

Google's AI-generated summary displayed at the top of search results, synthesising information from multiple sources to directly answer user queries. AI Over...

July 11, 2026

](/glossary/ai-overview)[

### LLM Citations

References that large language models include in their responses, pointing to specific web pages as sources. Unlike traditional search clicks, LLM citations ...

July 11, 2026

](/glossary/llm-citations)[

### PerplexityBot

Perplexity's web crawler that fetches real-time web content to provide up-to-date, cited answers. PerplexityBot actively crawls sites to find current informa...

July 11, 2026

](/glossary/perplexitybot)[

### GPTBot

OpenAI's web crawler that indexes publicly available web content for use in training and powering ChatGPT's responses. GPTBot respects robots.txt directives....

July 11, 2026

](/glossary/gptbot)[

### Claude

Anthropic's AI assistant known for detailed, nuanced responses. Claude processes user queries using its training data and can reference web content when give...

July 11, 2026

](/glossary/claude)[

### Perplexity

An AI-powered answer engine that provides conversational responses with inline citations and source links. Perplexity actively crawls the web in real-time to...

July 11, 2026

](/glossary/perplexity)[

### Gemini

Google's AI model family powering AI Overviews in Google Search, the Gemini chatbot, and Vertex AI services. Gemini has direct access to Google's search inde...

July 11, 2026

](/glossary/gemini)[

### ChatGPT

OpenAI's conversational AI powered by GPT models (GPT-4o, GPT-4.5, etc.). ChatGPT answers user queries by synthesising information from its training data and...

July 11, 2026

](/glossary/chatgpt)[

### Search Demand

The volume of monthly searches for a specific keyword or topic. In the context of GEO, search demand helps prioritise which topics to create content for — hi...

July 11, 2026

](/glossary/search-demand)[

### Retrieval Map

A strategic content architecture where key pages are positioned as nodes in an interconnected knowledge graph, designed to align with how LLMs retrieve and c...

July 11, 2026

](/glossary/retrieval-map)[

### Citation Density

The concentration of citation-worthy elements within content — factual claims, statistics, definitions, expert quotes, and structured data that LLMs can extr...

July 11, 2026

](/glossary/citation-density)[

### Content Velocity Planner

The section of the Topicker report that maps a 12-month publishing schedule, specifying how many articles to publish each month, which topic clusters to focu...

July 11, 2026

](/glossary/content-velocity-planner)[

### Satellite Content

Supporting articles that cover specific subtopics within a topic cluster, linking back to the pillar page. Satellite content targets long-tail keywords and s...

July 11, 2026

](/glossary/satellite-content)[

### Pillar Content

A comprehensive, authoritative page covering a broad topic in depth, serving as the hub of a topic cluster. Pillar content links to satellite articles on sub...

July 11, 2026

](/glossary/pillar-content)[

### CCAS Components

The four sub-scores that make up a competitor's CCAS (Competitor Citation Authority Score): Citation Frequency (how often cited), Content Depth (entity richn...

July 11, 2026

](/glossary/ccas-components)[

### Exploitable Gap Playbook

A prioritised list of competitive opportunities ranked by effort and impact, derived from the gap analysis. Each opportunity includes a GEO tactic, SEO tacti...

July 11, 2026

](/glossary/exploitable-gap-playbook)[

### Content Format Audit

An analysis comparing the target site's content format profile against competitor averages, identifying format opportunities. Evaluates video presence, schem...

July 11, 2026

](/glossary/content-format-audit)[

### Entity-Topic Gap Map

An analysis identifying entities and topic clusters that competitors cover but the target site does not. Each entity gap includes the entity type (person, pl...

July 11, 2026

](/glossary/entity-topic-gap-map)[

### Keyword Delta

The difference between a target site's keyword rankings and competitor rankings for the same query set. Keywords are categorised as gap (competitors rank, yo...

July 11, 2026

](/glossary/keyword-delta)[

### GEO Visibility Benchmark

A comparison of the target site's GEO score against competitor averages, showing the gap and relative position. Includes analysis of citation types competito...

July 11, 2026

](/glossary/geo-visibility-benchmark)[

### Competitor Profile

A detailed analysis of a competitor's GEO and SEO positioning, including their CCAS score, content strategy, strengths, weaknesses, geo gaps, and SEO gaps. U...

July 11, 2026

](/glossary/competitor-profile)[

### Competitive Intelligence (CCAS)

Competitor Citation Authority Score — a 0–100 metric evaluating competitor AI visibility across four dimensions: Citation Frequency, Content Depth, Technical...

July 11, 2026

](/glossary/competitive-intelligence)[

### Semantic HTML

Using HTML elements according to their intended meaning (e.g., <article>, <nav>, <section>, <header>, <h1>–<h6>) rather than generic containers like <div>. S...

July 11, 2026

](/glossary/semantic-html)[

### Internal Linking

The practice of connecting pages within the same website through hyperlinks. Strong internal linking distributes page authority, helps crawlers discover cont...

July 11, 2026

](/glossary/internal-linking)[

### Crawl Depth

The number of clicks required to reach a page from the homepage. Pages buried deep in a site's hierarchy (high crawl depth) are less likely to be discovered ...

July 11, 2026

](/glossary/crawl-depth)[

### Sitemap

An XML file listing all important URLs on a website, helping search engines and AI crawlers discover and index content efficiently. A well-maintained sitemap...

July 11, 2026

](/glossary/sitemap)[

### robots.txt

A text file at a website's root that instructs web crawlers which pages or directories to crawl or skip. While traditionally used for search engine bots, rob...

July 11, 2026

](/glossary/robots-txt)[

### llms.txt

A proposed standard (by Jeremy Howard) for controlling AI crawler access to site content. Placed at domain root, it specifies permitted/blocked crawlers, key...

July 11, 2026

](/glossary/llms-txt)[

### Content Format Diversity

The variety of content structures on a site: definitions, comparisons, tutorials, lists, FAQs, tables, calculators, glossaries. AI engines cite diverse forma...

July 11, 2026

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### Citation Trigger Phrases

Specific query patterns that consistently trigger AI citations (e.g., 'best \[category\] for \[use case\]', 'how to \[task\] with \[tool\]', '\[brand\] vs \[competitor\]...

July 11, 2026

](/glossary/citation-trigger-phrases)[

### Semantic Depth

The richness of entity relationships, concept coverage, and contextual nuance in content. Measured by entity co-occurrence, topic breadth, and alignment with...

July 11, 2026

](/glossary/semantic-depth)[

### First-Mover Topics

High-value topics where no competitor has published comprehensive content. Identified via semantic analysis of competitor coverage maps. Represent low-compet...

July 11, 2026

](/glossary/first-mover-topics)[

### Gap Opportunity Matrix

A prioritised framework categorising content gaps by lens (Entity, Format, Query Coverage, Semantic Depth) and quadrant (Do First, Schedule, Reconsider, Watc...

July 11, 2026

](/glossary/gap-opportunity-matrix)[

### Content Velocity

A planned publishing cadence mapping article production to topic clusters over 12 months. Each month specifies a focus theme, article IDs to publish, and exp...

July 11, 2026

](/glossary/content-velocity)[

### Topic Cluster

A group of interlinked articles covering a broad topic (pillar) and its subtopics (satellites). Clusters build topical authority by creating semantic relatio...

July 11, 2026

](/glossary/topic-cluster)[

### Article Blueprint

A detailed content specification generated by Topicker including: target keyword, search volume, difficulty, word count range, content format (pillar/satelli...

July 11, 2026

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### ZCTS (Zero-Click Threat Score)

A 0–100 metric estimating how severely AI Overviews reduce click-through rate for a specific keyword. Factors include AI Overview presence, completeness, fea...

July 11, 2026

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### Findability Roadmap

A 12-month forecast predicting visibility improvements based on planned content velocity, technical fixes, and authority building. Each month shows estimated...

July 11, 2026

](/glossary/findability-roadmap)[

### Grounding Confidence

A 0–100 score indicating how well an AI response is supported by verifiable sources. Higher grounding confidence means the AI's citation is backed by evidenc...

July 11, 2026

](/glossary/grounding-confidence)[

### Share of Voice (SOV)

A brand's proportion of total citations across all competitors for a given query set. Calculated as: (Brand Citations / Total Citations) × 100. Indicates com...

July 11, 2026

](/glossary/share-of-voice)[

### LLM Citation Rate

The percentage of test queries where a brand/domain is cited by AI engines (ChatGPT, Gemini, Perplexity, Claude). Measured by running citation tests against ...

July 11, 2026

](/glossary/llm-citation-rate)[

### Content Gap Score

A 0–100 metric measuring the difference between a site's topic coverage and competitor coverage. Higher scores indicate more missing topics and greater oppor...

July 11, 2026

](/glossary/content-gap-score)[

### E-E-A-T Scorecard

The section of the Topicker report that evaluates the website across Google's four E-E-A-T dimensions (Experience, Expertise, Authoritativeness, Trustworthin...

July 11, 2026

](/glossary/eeat-scorecard)[

### Quick Wins

High-impact, low-effort Optimization actions identified in the GEO Scorecard section of the Topicker report. Each quick win includes the specific GEO techniq...

July 11, 2026

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### GEO Techniques

Specific Optimization strategies recommended in the Topicker report to improve AI citation likelihood. Key techniques include Definition Hijacking, Retrieval...

July 11, 2026

](/glossary/geo-techniques)[

### GEO Archetype

A classification of a site's content strategy pattern that determines its baseline citation potential. Four tiers: Knowledge Base (highest citation rate — st...

July 11, 2026

](/glossary/geo-archetype)[

### GEO Readiness Breakdown

The detailed component scores that make up the overall GEO Readiness Score, displayed as a radar chart in the Topicker report. Each dimension (Entity Density...

July 11, 2026

](/glossary/geo-readiness-breakdown)[

### Authority Signals

External credibility indicators: backlink profile quality, press mentions, Wikipedia/Crunchbase entries, industry certifications (SOC 2, ISO), review platfor...

July 11, 2026

](/glossary/authority-signals)[

### Freshness Score

Assesses content recency signals: publication dates, last-modified timestamps, changelog updates, blog frequency, and copyright year. Fresh content signals a...

July 11, 2026

](/glossary/freshness-score)[

### Format Score

Measures content format diversity: comparison tables, numbered guides, step-by-step tutorials, definition blocks, FAQ sections, and scannable lists. AI engin...

July 11, 2026

](/glossary/format-score)[

### Structure Score

Evaluates content organisation using heading hierarchy (H1–H3), semantic HTML, FAQ blocks, table of contents, breadcrumbs, and schema markup. Well-structured...

July 11, 2026

](/glossary/structure-score)[

### Entity Density

The frequency and diversity of named entities (brands, products, concepts, people, organisations) mentioned in content. High entity density helps AI engines ...

July 11, 2026

](/glossary/entity-density)[

### GEO Readiness Score

A composite 0–100 score measuring how well a website is positioned for AI engine citation. Calculated across five weighted dimensions: Entity Density, Struct...

July 11, 2026

](/glossary/geo-readiness-score)[

### Topical Authority

The perceived expertise and comprehensive coverage a website demonstrates on a specific subject. Built through consistent publishing of interlinked, entity-r...

July 11, 2026

](/glossary/topical-authority)[

### Entity Coverage

The extent to which a website's content mentions and contextually covers relevant named entities in its niche. Strong entity coverage signals topical authori...

July 11, 2026

](/glossary/entity-coverage)[

### Zero-Click Search

A search query where the user's question is answered directly on the SERP (via featured snippet, knowledge panel, AI Overview, or PAA) without clicking throu...

July 11, 2026

](/glossary/zero-click-search)[

### Featured Snippet

A selected search result that Google displays prominently at the top of SERPs in a special answer box, extracting content directly from a webpage. Featured s...

July 11, 2026

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### People Also Ask (PAA)

A Google SERP feature displaying related questions that expand on click to show brief answers with source links. PAA questions reveal user intent gaps and re...

July 11, 2026

](/glossary/people-also-ask)[

### Search Intent

The underlying goal behind a user's search query. The four primary types are: Informational (seeking knowledge), Navigational (finding a specific site/page),...

July 11, 2026

](/glossary/search-intent)[

### Core Web Vitals (CWV)

Google's set of user experience metrics measuring page performance: LCP (Largest Contentful Paint — loading speed), CLS (Cumulative Layout Shift — visual sta...

July 11, 2026

](/glossary/core-web-vitals)[

### Schema.org Markup

Structured data vocabulary implemented as JSON-LD that helps search engines and AI crawlers understand the semantics of page content. Key schema types for GE...

July 11, 2026

](/glossary/schema-markup)[

### E-E-A-T

Experience, Expertise, Authoritativeness, Trustworthiness — Google's quality framework for evaluating content credibility. Each dimension is assessed through...

July 11, 2026

](/glossary/e-e-a-t)[

### SEO

Search Engine Optimization — the practice of improving website visibility in traditional search engine results pages (SERPs). SEO encompasses technical infra...

July 11, 2026

](/glossary/seo)[

### FAQ Schema Included

The implementation of FAQPage schema markup (JSON-LD) on content pages, enabling search engines and AI crawlers to identify question-answer pairs on the page...

July 11, 2026

](/glossary/faq-schema-included)[

### Entity Density Target

The practice of ensuring content contains a sufficient number and diversity of named entities (brands, people, concepts, products, organisations) to signal t...

July 11, 2026

](/glossary/entity-density-target)[

### Authority Anchoring

A GEO technique where content references authoritative external sources (industry reports, government data, peer-reviewed studies) and is itself referenced b...

July 11, 2026

](/glossary/authority-anchoring)[

### Knowledge Chunk Optimised

A content format designed for LLM extraction — self-contained paragraphs that answer a specific question completely, without requiring additional context. Kn...

July 11, 2026

](/glossary/knowledge-chunk-optimised)[

### Retrieval Map Node

A content page designed to serve as a key node in an LLM's retrieval map — the internal knowledge graph the model uses to connect related concepts. Retrieval...

July 11, 2026

](/glossary/retrieval-map-node)[

### Definition Hijacking

A GEO technique where content is structured to become the authoritative definition that LLMs use when explaining a concept. By placing a clear, concise defin...

July 11, 2026

](/glossary/definition-hijacking)[

### AI Crawlability

The degree to which AI crawlers (GPTBot, Google-Extended, PerplexityBot, ClaudeBot, etc.) can access, render, and index a website's content. If AI crawlers a...

July 11, 2026

](/glossary/ai-crawlability)[

### LLMO

Large Language Model Optimization — a subset of GEO focused specifically on making content discoverable, parseable, and citable by large language models. LLM...

July 11, 2026

](/glossary/llmo)[

### AIO

AI Overview — Google's AI-generated summary that appears at the top of search results, synthesising information from multiple sources. AIOs pull content dire...

July 11, 2026

](/glossary/aio)[

### GEO

Generative Engine Optimization — the practice of optimising digital content so it is accurately cited and recommended by AI-powered search engines and large ...

July 11, 2026

](/glossary/geo)


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