graduality vs gradualness

graduality and gradualness both are nouns.

Word	Noun	Adjective	Verb	Adverb
graduality	Yes	No	No	No
gradualness	Yes	No	No	No

As nouns, graduality and gradualness are synonyms defined as:

graduality and gradualness: the quality of being gradual or of coming about by gradual stages

graduality (noun)	gradualness (noun)
the quality of being gradual or of coming about by gradual stages	the quality of being gradual or of coming about by gradual stages
	the property possessed by a slope that is very gradual