dotard vs golden ager

dotard and golden ager both are nouns.

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

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

dotard: an oldster in his dotage; someone whose age has impaired his intellect
golden ager: an elderly person

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

dotard (noun)	golden ager (noun)
an oldster in his dotage; someone whose age has impaired his intellect	an elderly person