commemorate vs commemorative

commemorate is not a noun while commemorative is a noun.

Word	Noun	Adjective	Verb	Adverb
commemorate	No	No	Yes	No
commemorative	Yes	Yes	No	No

commemorate (noun)	commemorative (noun)
	an object (such as a coin or postage stamp) made to mark an event or honor a person

commemorate (adjective)	commemorative (adjective)
	intended as a commemoration

commemorate (verb)	commemorative (verb)
call to remembrance; keep alive the memory of someone or something, as in a ceremony
be or provide a memorial to a person or an event
celebrate by some ceremony or observation