derogation vs no-count

derogation is a noun but no-count is not a noun.

Word	Noun	Adjective	Verb	Adverb
derogation	Yes	No	No	No
no-count	No	Yes	No	No

derogation (noun)	no-count (noun)
(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

derogation (adjective)	no-count (adjective)
	without merit; of little or no value or use