siren vs derogation

siren and derogation both are nouns.

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

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