divorcee vs adult female

divorcee and adult female both are nouns.

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

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

Other hypernyms of divorcee include woman.

divorcee (noun)	adult female (noun)
a divorced woman or a woman who is separated from her husband	an adult female person (as opposed to a man)