antiquate vs antique

antiquate is not a noun while antique is a noun.

Word	Noun	Adjective	Verb	Adverb
antiquate	No	No	Yes	No
antique	Yes	Yes	Yes	No

As verbs, antiquate and antique are synonyms defined as:

antiquate (noun)	antique (noun)
	any piece of furniture or decorative object or the like produced in a former period and valuable because of its beauty or rarity
	an elderly man

antiquate (adjective)	antique (adjective)
	made in or typical of earlier times and valued for its age
	out of fashion
	belonging to or lasting from times long ago

antiquate (verb)	antique (verb)
give an antique appearance to	give an antique appearance to
make obsolete or old-fashioned	shop for antiques