petty criticism vs derogation

petty criticism and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
petty criticism	Yes	No	No	No
derogation	Yes	No	No	No

As nouns, derogation is a hypernym of petty criticism; that is, derogation is a word with a broader meaning than petty criticism:

Other hypernyms of petty criticism include depreciation, disparagement.

petty criticism (noun)	derogation (noun)
a petty disparagement	(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