femme fatale vs enchantress

femme fatale and enchantress both are nouns.

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

As nouns, femme fatale and enchantress are synonyms defined as:

femme fatale and enchantress: a woman who is considered to be dangerously seductive

Other synonyms of femme fatale include Delilah, siren, temptress.

femme fatale (noun)	enchantress (noun)
a woman who is considered to be dangerously seductive	a female sorcerer or magician
	a woman who is considered to be dangerously seductive