What do you call a word that is an example of itself? [duplicate]

For example, "word" is a word, "adjectival" is adjectival, etc. Is there a term for this? Something like a set that includes itself, but not quite. I want to call it "autoinclusive"; would that work linguistically?


Perhaps the word you're looking for is autological (or homological).

An autological word (also called homological word) is a word expressing a property which it also possesses itself. Source