point man vs adult male

point man and adult male both are nouns.

Word	Noun	Adjective	Verb	Adverb
point man	Yes	No	No	No
adult male	Yes	No	No	No

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

Other hypernyms of point man include leader, man.

point man (noun)	adult male (noun)
a soldier who goes ahead of a patrol	an adult person who is male (as opposed to a woman)
someone who is the forefront of an important enterprise