conformity vs nicety

conformity and nicety both are nouns.

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

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

Other hyponyms of conformity include justness, rightness, normality.

conformity (noun)	nicety (noun)
acting according to certain accepted standards	conformity with some esthetic standard of correctness or propriety
hardened conventionality	a subtle difference in meaning or opinion or attitude
correspondence in form or appearance
orthodoxy in thoughts and belief
concurrence of opinion