antediluvian vs golden ager

antediluvian and golden ager both are nouns.

Word	Noun	Adjective	Verb	Adverb
antediluvian	Yes	Yes	No	No
golden ager	Yes	No	No	No

As nouns, golden ager is a hypernym of antediluvian; that is, golden ager is a word with a broader meaning than antediluvian:

Other hypernyms of antediluvian include old person, oldster, senior citizen.

antediluvian (noun)	golden ager (noun)
a very old person	an elderly person
any of the early patriarchs who lived prior to the Noachian deluge

antediluvian (adjective)	golden ager (adjective)
of or relating to the period before the biblical flood
so extremely old as seeming to belong to an earlier period