beast of prey vs carnivore

beast of prey

noun
  • A carnivorous animal that hunts for its food, especially one that preys on vertebrates. 

  • A predatory person, savagely cruel and ruthless in their treatment of others. 

carnivore

noun
  • A mammal belonging to the order Carnivora. 

  • An organism that feeds chiefly on animals; an animal that feeds on meat as the main part of its diet. 

  • A follower of the carnivore diet (consuming only animal-based products, such as meat, eggs and dairy) 

  • A person who is not a vegetarian. 

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