femme fatale vs woman

femme fatale and woman both are nouns.

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

As nouns, woman is a hypernym of femme fatale; that is, woman is a word with a broader meaning than femme fatale:

Other hypernyms of femme fatale include adult female.

femme fatale (noun)	woman (noun)
a woman who is considered to be dangerously seductive	women as a class
	an adult female person (as opposed to a man)
	a female person who plays a significant role (wife or mistress or girlfriend) in the life of a particular man