hunk vs adult male

hunk and adult male both are nouns.

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

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

Other hypernyms of hunk include man.

hunk (noun)	adult male (noun)
a large piece of something without definite shape	an adult person who is male (as opposed to a woman)
a well-built sexually attractive man