hijacker vs derogation

hijacker and derogation both are nouns.

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

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