derogation vs poseur

derogation and poseur both are nouns.

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

derogation (noun)	poseur (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a person who habitually pretends to be something he is not
a communication that belittles somebody or something