What is an entity in SEO?
Definition
An entity is a single, well-defined thing a search engine can recognize and tell apart from everything else: a person, place, organization, product, or idea.
Search engines stopped matching pages only on strings of text years ago and started matching them on things. When Google introduced its Knowledge Graph in May 2012, it described the shift as "things, not strings": a model of real-world entities and the relationships between them. At launch it held more than 500 million objects and more than 3.5 billion facts about them.
For a website, the entities that matter are the ones a page is about and the ones it mentions: your business, the people behind it, your services, the places you serve, and the ideas your customers ask about. A page that names its entities clearly and consistently is easier for Google and AI answer engines to understand, connect, and quote. A page that uses three different names for the same service makes the engine guess.
Why does it matter to your business?
Engines rank and cite entities they can identify. If your business, services, and expertise are clear, consistent entities across your site and the web, you are easier to recognize and recommend than a competitor who is just a string of words.
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Sources, verified September 11, 2026
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