deathblow vs doom

deathblow

noun
  • A strike or blow that leads to death, especially a coup de grace. 

  • Something that prevents the completion, or ends the existence, of a project etc.; a fatal setback. 

doom

noun
  • Death. 

  • An undesirable fate; an impending severe occurrence or danger that seems inevitable. 

  • The Last Judgment; or, an artistic representation thereof. 

  • Destiny, especially terrible. 

  • A feeling of danger, impending danger, darkness, or despair. 

verb
  • To destine; to fix irrevocably the ill fate of. 

  • To pronounce judgment or sentence on; to condemn. 

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