derogation vs pillager

derogation and pillager both are nouns.

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

derogation (noun)	pillager (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	someone who takes spoils or plunder (as in war)
a communication that belittles somebody or something