cannibal vs man-eater

cannibal

noun
  • An organism which eats others of its own species or kind, especially a human who eats human flesh. 

man-eater

noun
  • A cannibal; a human that eats other humans. 

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

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

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