old-timer vs antique

old-timer and antique both are nouns.

Word	Noun	Adjective	Verb	Adverb
old-timer	Yes	No	No	No
antique	Yes	Yes	Yes	No

As nouns, old-timer and antique are synonyms defined as:

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

old-timer (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

old-timer (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

old-timer (verb)	antique (verb)
	give an antique appearance to
	shop for antiques