graybeard vs antique

graybeard and antique both are nouns.

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

As nouns, antique is a hyponym of graybeard; that is, antique is a word with a more specific, narrower meaning than graybeard:

Other hyponyms of graybeard include codger, old codger, gaffer, old-timer, old geezer, oldtimer, patriarch.

graybeard (noun)	antique (noun)
a man who is very old	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

graybeard (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

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