derogation vs hijacker

derogation and hijacker both are nouns.

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

derogation (noun)	hijacker (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	a holdup man who stops a vehicle and steals from it
a communication that belittles somebody or something	someone who uses force to take over a vehicle (especially an airplane) in order to reach an alternative destination