foundress vs founding father

foundress and founding father both are nouns.

Word	Noun	Adjective	Verb	Adverb
foundress	Yes	No	No	No
founding father	Yes	No	No	No

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

Other hypernyms of foundress include beginner, father, founder, adult female, woman.

foundress (noun)	founding father (noun)
a woman founder	a person who founds or establishes some institution