fatal vs internecine

fatal

adj
  • Causing death or destruction. 

  • Causing a sudden end to the running of a program. 

  • Proceeding from, or appointed by, fate or destiny. 

  • Foreboding death or great disaster. 

noun
  • A fatality; an event that leads to death. 

  • A fatal error; a failure that causes a program to terminate. 

internecine

adj
  • Mutually destructive; most often applied to warfare. 

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

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