derogation vs dopy

derogation is a noun but dopy is not a noun.

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

derogation (noun)	dopy (noun)
(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

derogation (adjective)	dopy (adjective)
	having or revealing stupidity