derogation vs grouch

derogation and grouch both are nouns.

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

derogation (noun)	grouch (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a bad-tempered person
a communication that belittles somebody or something

derogation (verb)	grouch (verb)
	show one's unhappiness or critical attitude