What is Hallucination?
When a model states something false with confidence, usually from parametric memory without grounding. Grounded, cited answers hallucinate less, which is why engines prefer quotable sources.
Related terms
Grounding
Tying a model’s answer to retrieved sources instead of pure parametric memory. Grounded answers cite pages, which turns citation readiness into visible referral and brand presence.
Fact-Checking
Verifying statistics, URLs, dates, and attributions against original publications before shipping. Citation hubs live or die on this step: one wrong number poisons every page that quotes you.
Grounding Source
A page an AI answer actually retrieved and based claims on. Becoming a grounding source requires being crawlable, topically relevant, and quotable at the passage level.
Answer Engine Optimization (AEO)
Answer Engine Optimization is the practice of structuring pages so answer engines and AI assistants can extract, trust, and quote them: a direct definition up top, scannable steps, quotable facts, and FAQ or Article schema behind them.
Generative Engine Optimization (GEO)
Generative Engine Optimization improves how often a brand or page is cited inside AI-generated answers. It combines classic SEO (crawlability, relevance) with quotability: clear facts, named entities, sources, and machine-readable structure.
AI Overviews
Google’s AI-generated summaries at the top of some results pages. They synthesize multiple sources and link to them, which can reduce clicks to publishers even when a page ranks well organically.