plaguey vs derogation

plaguey is not a noun while derogation is a noun.

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

plaguey (noun)	derogation (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

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

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