internecine vs violent

internecine

adj
  • Mutually destructive; most often applied to warfare. 

  • Characterized by struggle within a group, usually applied to an ethnic or familial relationship. 

violent

adj
  • Involving physical conflict. 

  • Produced or effected by force; not spontaneous; unnatural. 

  • Involving extreme force or motion. 

  • Likely to use physical force. 

  • Intensely vivid. 

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