repeal vs derogation

repeal and derogation both are nouns.

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

As nouns, derogation is a hyponym of repeal; that is, derogation is a word with a more specific, narrower meaning than repeal:

repeal: the act of abrogating; an official or legal cancellation
derogation: (law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law

Other hyponyms of repeal include vacation, recall, revocation.

repeal (noun)	derogation (noun)
the act of abrogating; an official or legal cancellation	(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

repeal (verb)	derogation (verb)
cancel officially