femme fatale vs vixen

femme fatale

noun
  • An attractive and seductive but ultimately dangerous woman. 

vixen

noun
  • A racy or salacious woman who is sexually attractive. 

  • A female fox. 

  • A malicious, quarrelsome or temperamental woman. 

  • A wife who has sex with other men with her husband's consent. 

How often have the words femme fatale and vixen occurred in a corpus of books? (source: Google Ngram Viewer )