derogation vs siren

derogation and siren both are nouns.

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

derogation (noun)	siren (noun)
(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law	eellike aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills
a communication that belittles somebody or something	an acoustic device producing a loud often wailing sound as a signal or warning
	a warning signal that is a loud wailing sound
	a woman who is considered to be dangerously seductive