derogation vs mountebank

derogation and mountebank both are nouns.

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

derogation (noun)	mountebank (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a flamboyant deceiver; one who attracts customers with tricks or jokes
a communication that belittles somebody or something