sex vs siren

sex and siren both are nouns.

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

sex (noun)	siren (noun)
activities associated with sexual intercourse	eellike aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills
the properties that distinguish organisms on the basis of their reproductive roles	an acoustic device producing a loud often wailing sound as a signal or warning
all of the feelings resulting from the urge to gratify sexual impulses	a warning signal that is a loud wailing sound
either of the two categories (male or female) into which most organisms are divided	a woman who is considered to be dangerously seductive

sex (verb)	siren (verb)
tell the sex (of young chickens)
to evoke sexual feelings