favourableness vs advantage

favourableness and advantage both are nouns.

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

As nouns, advantage is a hypernym of favourableness; that is, advantage is a word with a broader meaning than favourableness:

favourableness: the quality of being encouraging or promising of a successful outcome
advantage: the quality of having a superior or more favorable position

Other hypernyms of favourableness include vantage.

favourableness (noun)	advantage (noun)
the quality of being encouraging or promising of a successful outcome	the quality of having a superior or more favorable position
	benefit resulting from some event or action
	(tennis) first point scored after deuce

favourableness (verb)	advantage (verb)
	give an advantage to