congressman vs adult female

congressman and adult female both are nouns.

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

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

Other hypernyms of congressman include representative, woman.

congressman (noun)	adult female (noun)
a male member of the United States House of Representatives	an adult female person (as opposed to a man)