derogation vs obloquy

derogation and obloquy both are nouns.

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

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

derogation: a communication that belittles somebody or something
obloquy: a false accusation of an offense or a malicious misrepresentation of someone's words or actions

derogation (noun)	obloquy (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a false accusation of an offense or a malicious misrepresentation of someone's words or actions
a communication that belittles somebody or something	state of disgrace resulting from public abuse