justness vs conformance

justness and conformance both are nouns.

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

As nouns, conformance is a hypernym of justness; that is, conformance is a word with a broader meaning than justness:

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

Other hypernyms of justness include conformity.

justness (noun)	conformance (noun)
the quality of being just or fair	correspondence in form or appearance
conformity with some esthetic standard of correctness or propriety