genuine vs counterfeit

genuine is not a noun while counterfeit is a noun.

Word	Noun	Adjective	Verb	Adverb
genuine	No	Yes	No	No
counterfeit	Yes	Yes	Yes	No

genuine (noun)	counterfeit (noun)
	a copy that is represented as the original

genuine (adjective)	counterfeit (adjective)
not fake or counterfeit	not genuine; imitating something superior
not pretended; sincerely felt or expressed
being or reflecting the essential or genuine character of something

genuine (verb)	counterfeit (verb)
	make a copy of with the intent to deceive