raptorial vs ravening

raptorial

adj
  • Like or resembling a raptor; seizing or plundering, like a bird of prey. 

ravening

adj
  • Voracious and greedy. 

noun
  • Eagerness for plunder; rapacity; extortion. 

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