shaver vs adult male

shaver and adult male both are nouns.

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

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

Other hypernyms of shaver include man.

shaver (noun)	adult male (noun)
a razor powered by an electric motor	an adult person who is male (as opposed to a woman)
a young person of either sex
an adult male who shaves