cocotte vs adult female

cocotte and adult female both are nouns.

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

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

Other hypernyms of cocotte include woman.

cocotte (noun)	adult female (noun)
a small casserole in which individual portions can be cooked and served	an adult female person (as opposed to a man)
a woman who engages in sexual intercourse for money