patinate vs patina

patinate is not a noun while patina is a noun.

Word	Noun	Adjective	Verb	Adverb
patinate	No	No	Yes	No
patina	Yes	No	No	No

patinate (noun)	patina (noun)
	a fine coating of oxide (produced by oxidation over a long period of time) on the surface of a metal (particularly copper)
	a gloss or sheen on wooden furniture produced by age, polishing, or handling
	an acquired change in the appearance of something (other than metal or wood)

patinate (verb)	patina (verb)
coat with a patina