guy vs adult male

guy and adult male both are nouns.

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

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

Other hypernyms of guy include man.

guy (noun)	adult male (noun)
a cable, wire, or rope that is used to brace something (especially a tent)	an adult person who is male (as opposed to a woman)
an informal term for a youth or man

guy (verb)	adult male (verb)
steady or support with a guy wire or cable
subject to laughter or ridicule