cold water vs derogation

cold water and derogation both are nouns.

Word	Noun	Adjective	Verb	Adverb
cold water	Yes	No	No	No
derogation	Yes	No	No	No

As nouns, derogation is a hypernym of cold water; that is, derogation is a word with a broader meaning than cold water:

Other hypernyms of cold water include depreciation, disparagement.

cold water (noun)	derogation (noun)
disparagement of a plan or hope or expectation	(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