nicety vs rightness

nicety and rightness both are nouns.

Word	Noun	Adjective	Verb	Adverb
nicety	Yes	No	No	No
rightness	Yes	No	No	No

As nouns, nicety and rightness are synonyms defined as:

nicety and rightness: conformity with some esthetic standard of correctness or propriety

Other synonyms of nicety include justness.

nicety (noun)	rightness (noun)
conformity with some esthetic standard of correctness or propriety	according with conscience or morality
a subtle difference in meaning or opinion or attitude	conformity to fact or truth
	appropriate conduct; doing the right thing
	conformity with some esthetic standard of correctness or propriety