impersonator vs derogation

impersonator and derogation both are nouns.

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

impersonator (noun)	derogation (noun)
someone who (fraudulently) assumes the appearance of another	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
	a communication that belittles somebody or something