repellant vs derogation

repellant and derogation both are nouns.

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

repellant (noun)	derogation (noun)
the power to repel	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
a chemical substance that repels animals	a communication that belittles somebody or something
a compound with which fabrics are treated to repel water

repellant (adjective)	derogation (adjective)
highly offensive; arousing aversion or disgust
serving or tending to repel