derogation vs reversionist

derogation and reversionist both are nouns.

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

derogation (noun)	reversionist (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	someone who lapses into previous undesirable patterns of behavior
a communication that belittles somebody or something