favourableness vs positivity

favourableness and positivity both are nouns.

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

As nouns, favourableness and positivity are synonyms defined as:

favourableness and positivity: the quality of being encouraging or promising of a successful outcome

Other synonyms of favourableness include advantageousness, favorableness, positiveness, profitableness.

favourableness (noun)	positivity (noun)
the quality of being encouraging or promising of a successful outcome	a quality or state characterized by certainty or acceptance or affirmation and dogmatic assertiveness
	the quality of being encouraging or promising of a successful outcome
	the quality of being undeniable and not worth arguing about
	an amount greater than zero
	the character of the positive electric pole