Frenchman vs adult female

Frenchman and adult female both are nouns.

Word	Noun	Adjective	Verb	Adverb
Frenchman	Yes	No	No	No
adult female	Yes	No	No	No

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

Other hypernyms of Frenchman include French person, woman.

Frenchman (noun)	adult female (noun)
a male person of French nationality	an adult female person (as opposed to a man)