verify vs verification

verify is not a noun while verification is a noun.

Word	Noun	Adjective	Verb	Adverb
verify	No	No	Yes	No
verification	Yes	No	No	No

verify (noun)	verification (noun)
	additional proof that something that was believed (some fact or hypothesis or theory) is correct
	(law) an affidavit attached to a statement confirming the truth of that statement

verify (verb)	verification (verb)
confirm the truth of
to declare or affirm solemnly and formally as true
attach or append a legal verification to (a pleading or petition)
check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard