man-eater vs side bitch

man-eater

noun
  • A seductive dangerous woman, often readily taking and discarding male romantic partners. 

  • A cannibal; a human that eats other humans. 

  • An animal that attacks and kills humans for food, such as certain tigers or sharks; any animal that consumes human flesh. 

side bitch

noun
  • A mistress; a woman one dates in addition to his girlfriend or wife, usually in secret. 

How often have the words man-eater and side bitch occurred in a corpus of books? (source: Google Ngram Viewer )