oldtimer vs antique

oldtimer and antique both are nouns.

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

As nouns, oldtimer and antique are synonyms defined as:

Other synonyms of oldtimer include gaffer, old-timer, old geezer.

oldtimer (noun)	antique (noun)
an elderly man	any piece of furniture or decorative object or the like produced in a former period and valuable because of its beauty or rarity
an experienced person who has been through many battles; someone who has given long service	an elderly man

oldtimer (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

oldtimer (verb)	antique (verb)
	give an antique appearance to
	shop for antiques