harasser vs derogation

harasser and derogation both are nouns.

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

harasser (noun)	derogation (noun)
a persistent attacker	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
a persistent tormentor	a communication that belittles somebody or something