grouch vs derogation

grouch and derogation both are nouns.

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

grouch (noun)	derogation (noun)
a bad-tempered person	(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

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