bottom feeder vs derogation

bottom feeder and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottom feeder	Yes	No	No	No
derogation	Yes	No	No	No

bottom feeder (noun)	derogation (noun)
an opportunist who profits from the misfortunes of others	(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