beauty vs adult female

beauty and adult female both are nouns.

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

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

Other hypernyms of beauty include woman.

beauty (noun)	adult female (noun)
the qualities that give pleasure to the senses	an adult female person (as opposed to a man)
an outstanding example of its kind
a very attractive or seductive looking woman