derogation vs rounder

derogation and rounder both are nouns.

Word	Noun	Adjective	Verb	Adverb
derogation	Yes	No	No	No
rounder	Yes	No	No	No

derogation (noun)	rounder (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a tool for rounding corners or edges
a communication that belittles somebody or something	a dissolute person; usually a man who is morally unrestrained