prey vs ravin

prey

verb
  • To act as a predator. 

noun
  • That which is or may be seized by animals or birds to be devoured 

  • A person or thing given up as a victim. 

  • A living thing that is eaten by another living thing. 

  • The victim of a disease. 

ravin

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