ghoulish vs unhealthy

ghoulish

adj
  • Of or pertaining to corpses and graverobbing. 

  • Of or pertaining to ghouls. 

  • Fascinated by corpses. 

unhealthy

adj
  • characterized by, or conducive to poor health 

  • characterized by disturbed mental health 

  • tending to corrupt 

  • sick or ill 

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