charitable vs killer instinct

charitable

adj
  • Kind, generous. 

  • Having a purpose or character of a charity. 

  • Pertaining to charity. 

killer instinct

noun
  • The natural inclination to do whatever is necessary to succeed (including extreme violence) 

  • Used other than figuratively or idiomatically: see killer, instinct. 

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