oppressor vs derogation

oppressor and derogation both are nouns.

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

oppressor (noun)	derogation (noun)
a person of authority who subjects others to undue pressures	(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