gainfulness vs profitableness

gainfulness and profitableness both are nouns.

Word	Noun	Adjective	Verb	Adverb
gainfulness	Yes	No	No	No
profitableness	Yes	No	No	No

As nouns, gainfulness and profitableness are synonyms defined as:

gainfulness and profitableness: the quality of affording gain or benefit or profit

Other synonyms of gainfulness include lucrativeness, profitability.

gainfulness (noun)	profitableness (noun)
the quality of affording gain or benefit or profit	the quality of affording gain or benefit or profit
	the quality of being encouraging or promising of a successful outcome