derogation vs wheeler dealer

derogation and wheeler dealer both are nouns.

Word	Noun	Adjective	Verb	Adverb
derogation	Yes	No	No	No
wheeler dealer	Yes	No	No	No

derogation (noun)	wheeler dealer (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a shrewd or unscrupulous person who knows how to circumvent difficulties
a communication that belittles somebody or something