hombre vs adult male

hombre and adult male both are nouns.

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

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

Other hypernyms of hombre include man.

hombre (noun)	adult male (noun)
an informal term for a youth or man	an adult person who is male (as opposed to a woman)