derogation vs plaguey

derogation is a noun but plaguey is not a noun.

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

derogation (noun)	plaguey (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)	plaguey (adjective)
	causing irritation or annoyance
	likely to spread and cause an epidemic disease

derogation (adverb)	plaguey (adverb)
	in a pernicious or annoying manner