dandy vs adult male

dandy and adult male both are nouns.

Word	Noun	Adjective	Verb	Adverb
dandy	Yes	Yes	No	No
adult male	Yes	No	No	No

As nouns, adult male is a hypernym of dandy; that is, adult male is a word with a broader meaning than dandy:

Other hypernyms of dandy include man.

dandy (noun)	adult male (noun)
a sailing vessel with two masts; a small mizzen is aft of the rudderpost	an adult person who is male (as opposed to a woman)
a man who is much concerned with his dress and appearance

dandy (adjective)	adult male (adjective)
excellent