justness vs rightness

justness and rightness both are nouns.

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

As nouns, justness and rightness are synonyms defined as:

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

Other synonyms of justness include nicety.

justness (noun)	rightness (noun)
the quality of being just or fair	according with conscience or morality
conformity with some esthetic standard of correctness or propriety	conformity to fact or truth
	appropriate conduct; doing the right thing
	conformity with some esthetic standard of correctness or propriety