unfavourable vs contrary

unfavourable is not a noun while contrary is a noun.

Word	Noun	Adjective	Verb	Adverb
unfavourable	No	Yes	No	No
contrary	Yes	Yes	No	No

unfavourable (noun)	contrary (noun)
	exact opposition
	a relation of direct opposition
	a logical relation such that two propositions are contraries if both cannot be true but both can be false

unfavourable (adjective)	contrary (adjective)
(of winds or weather) tending to hinder or oppose	of words or propositions so related that both cannot be true but both may be false
not encouraging or approving or pleasing	very opposed in nature or character or purpose
involving or creating circumstances detrimental to success or effectiveness	resistant to guidance or discipline
	in an opposing direction