nicety vs refinement

nicety and refinement both are nouns.

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

As nouns, nicety and refinement are synonyms defined as:

nicety and refinement: a subtle difference in meaning or opinion or attitude

Other synonyms of nicety include nuance, shade, subtlety.

nicety (noun)	refinement (noun)
conformity with some esthetic standard of correctness or propriety	the quality of excellence in thought and manners and taste
a subtle difference in meaning or opinion or attitude	a subtle difference in meaning or opinion or attitude
	the result of improving something
	the process of removing impurities (as from oil or metals or sugar etc.)
	a highly developed state of perfection; having a flawless or impeccable quality