derogation vs mocker

derogation and mocker both are nouns.

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

derogation (noun)	mocker (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	long-tailed grey-and-white songbird of the southern United States able to mimic songs of other birds
a communication that belittles somebody or something	someone who jeers or mocks or treats something with contempt or calls out in derision