favourableness vs favourable

favourableness is a noun but favourable is not a noun.

Word	Noun	Adjective	Verb	Adverb
favourableness	Yes	No	No	No
favourable	No	Yes	No	No

favourableness (noun)	favourable (noun)
the quality of being encouraging or promising of a successful outcome

favourableness (adjective)	favourable (adjective)
	(of winds or weather) tending to promote or facilitate
	encouraging or approving or pleasing
	giving an advantage
	presaging or likely to bring good luck or a good outcome