unfavorable vs unfavorableness

unfavorable is not a noun while unfavorableness is a noun.

Word	Noun	Adjective	Verb	Adverb
unfavorable	No	Yes	No	No
unfavorableness	Yes	No	No	No

unfavorable (noun)	unfavorableness (noun)
	the quality of not being encouraging or indicative of success

unfavorable (adjective)	unfavorableness (adjective)
(of winds or weather) tending to hinder or oppose
not encouraging or approving or pleasing
involving or creating circumstances detrimental to success or effectiveness