Entity
An entity is a thing with its own clear identity that search engines and AI can tell apart from everything else.
A person is an entity. So is a company, a product, a place, or an idea. Marie Curie is an entity. So are the Nobel Prize and radium.
What makes each one an entity is that its identity stays the same wherever it shows up. Nobody mixes it up with something else.
Search engines and AI build their picture of the world out of entities and the links between them. When they treat your brand as a clear entity, they describe it more accurately, find it more reliably, and trust it more.