wheeler dealer vs derogation

wheeler dealer and derogation both are nouns.

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

wheeler dealer (noun)	derogation (noun)
a shrewd or unscrupulous person who knows how to circumvent difficulties	(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