furtive vs raptorial

furtive

adj
  • Of a person, etc.: inclined to steal; pilfering, thieving. 

  • Of a thing: done with evasive or guilty secrecy. 

  • Of a thing: that has been acquired by theft; stolen; also (generally) taken stealthily. 

  • Of a person or an animal: sly, stealthy. 

raptorial

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

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