justness vs equity

justness and equity both are nouns.

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

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

Other hyponyms of justness include fairness, right, rightfulness.

justness (noun)	equity (noun)
the quality of being just or fair	conformity with rules or standards
conformity with some esthetic standard of correctness or propriety	the ownership interest of shareholders in a corporation
	the difference between the market value of a property and the claims held against it