identity vs identify

identity is a noun but identify is not a noun.

Word	Noun	Adjective	Verb	Adverb
identity	Yes	No	No	No
identify	No	No	Yes	No

identity (noun)	identify (noun)
the distinct personality of an individual regarded as a persisting entity
exact sameness
the individual characteristics by which a thing or person is recognized or known
an operator that leaves unchanged the element on which it operates

identity (verb)	identify (verb)
	recognize as being; establish the identity of someone or something
	identify as in botany or biology, for example
	consider to be equal or the same
	conceive of as united or associated
	consider (oneself) as similar to somebody else
	give the name or identifying characteristics of; refer to by name or some other identifying characteristic property