ghoul vs living dead

ghoul

noun
  • A demon said to feed on corpses. 

  • A person with a callous or uncaring attitude to human life and suffering, particularly when prioritising economic concerns. 

  • A person with an undue interest in death and corpses, or more generally in things that are revolting and repulsive. 

  • A graverobber. 

living dead

noun
  • The undead; zombies, vampires, etc. 

adj
  • Existing in stasis, without meaningful activity or development. 

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