conformity vs justness

conformity and justness both are nouns.

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

As nouns, justness is a hyponym of conformity; that is, justness is a word with a more specific, narrower meaning than conformity:

conformity: correspondence in form or appearance
justness: conformity with some esthetic standard of correctness or propriety

Other hyponyms of conformity include nicety, rightness, normality.

conformity (noun)	justness (noun)
acting according to certain accepted standards	the quality of being just or fair
hardened conventionality	conformity with some esthetic standard of correctness or propriety
correspondence in form or appearance
orthodoxy in thoughts and belief
concurrence of opinion