derogation vs opportunist

derogation and opportunist both are nouns.

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

derogation (noun)	opportunist (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a person who places expediency above principle
a communication that belittles somebody or something

derogation (adjective)	opportunist (adjective)
	taking immediate advantage, often unethically, of any circumstance of possible benefit