lady vs adult female

lady and adult female both are nouns.

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

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

Other hypernyms of lady include woman.

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

Other hypernyms of lady include woman.

lady (noun)	adult female (noun)
a woman of refinement	an adult female person (as opposed to a man)
a polite name for any woman