ghoulish vs morbid

ghoulish

adj
  • Fascinated by corpses. 

  • Of or pertaining to corpses and graverobbing. 

  • Of or pertaining to ghouls. 

morbid

adj
  • Suggesting the horror of death; macabre or ghoulish. 

  • Of, or relating to disease. 

  • Grisly or gruesome. 

  • Taking an interest in, or fixating on, unhealthy or unwholesome subjects such as death, decay, disease. 

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