sex vs femme fatale

sex and femme fatale both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
femme fatale	Yes	No	No	No

sex (noun)	femme fatale (noun)
activities associated with sexual intercourse	a woman who is considered to be dangerously seductive
the properties that distinguish organisms on the basis of their reproductive roles
all of the feelings resulting from the urge to gratify sexual impulses
either of the two categories (male or female) into which most organisms are divided

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