poser vs derogation

poser and derogation both are nouns.

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

poser (noun)	derogation (noun)
a particularly difficult or baffling question or problem	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
a person who poses for a photographer or painter or sculptor	a communication that belittles somebody or something
a person who habitually pretends to be something he is not