feminine vs feminineness

feminine and feminineness both are nouns.

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

feminine (noun)	feminineness (noun)
a gender that refers chiefly (but not exclusively) to females or to objects classified as female	the properties characteristic of the female sex

feminine (adjective)	feminineness (adjective)
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