foundress vs adult female

foundress and adult female both are nouns.

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

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

Other hypernyms of foundress include beginner, father, founder, founding father, woman.

foundress (noun)	adult female (noun)
a woman founder	an adult female person (as opposed to a man)