instance vs dilate

instance is a noun but dilate is not a noun.

Word	Noun	Adjective	Verb	Adverb
instance	Yes	No	Yes	No
dilate	No	No	Yes	No

As verbs, dilate is a hypernym of instance; that is, dilate is a word with a broader meaning than instance:

instance: clarify by giving an example of
dilate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Other hypernyms of instance include elaborate, enlarge, expand, expatiate, exposit, expound, flesh out, lucubrate.

instance (noun)	dilate (noun)
an item of information that is typical of a class or group
an occurrence of something

instance (verb)	dilate (verb)
clarify by giving an example of	become wider
	add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing