ghostly vs superhuman

ghostly

adj
  • Of or pertaining to ghosts or spirits. 

  • Spooky; frightening. 

superhuman

adj
  • Beyond what is possible for a human being. 

noun
  • A human being with remarkable abilities or superpowers. 

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