derogation vs dog in the manger

derogation and dog in the manger both are nouns.

Word	Noun	Adjective	Verb	Adverb
derogation	Yes	No	No	No
dog in the manger	Yes	No	No	No

derogation (noun)	dog in the manger (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	someone who prevents you from enjoying something that they themselves have no need for
a communication that belittles somebody or something