aggressor vs derogation

aggressor and derogation both are nouns.

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

aggressor (noun)	derogation (noun)
someone who attacks	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
a confident assertive person who acts as instigator	a communication that belittles somebody or something