unstressed vs feminine

unstressed is not a noun while feminine is a noun.

Word	Noun	Adjective	Verb	Adverb
unstressed	No	Yes	No	No
feminine	Yes	Yes	No	No

unstressed (noun)	feminine (noun)
	a gender that refers chiefly (but not exclusively) to females or to objects classified as female

unstressed (adjective)	feminine (adjective)
not bearing a stress or accent	associated with women and not with men
	female (of grammatical gender)
	befitting or characteristic of a woman especially a mature woman
	(music or poetry) ending on an unaccented beat or syllable