bird of prey vs carnivoran

bird of prey

noun

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

carnivoran

noun

  • Any member of the order Carnivora. 

adj

  • Of or pertaining to the order Carnivora. 

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