derogation vs nominal head

derogation and nominal head both are nouns.

Word	Noun	Adjective	Verb	Adverb
derogation	Yes	No	No	No
nominal head	Yes	No	No	No

derogation (noun)	nominal head (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a person used as a cover for some questionable activity
a communication that belittles somebody or something