ghosting vs spook

ghosting

noun
  • Ghost imaging. 

  • The practice of hiding prisoners from inspection from (possibly hostile) outside inspectors. 

  • The blurry appearance of a television picture resulting from interference caused by multipath reception. 

  • A form of identity theft in which someone steals the identity, and sometimes even the role within society, of a specific dead person (the "ghost") who is not widely known to be deceased. 

  • A problem with a keyboard where certain simultaneous keypresses trigger the action of a further key that was not in fact pressed. 

  • A method of ending a personal relationship by stopping any contact with the other party and not providing an explanation. 

  • The phenomenon of the writing on one side of a page in a notebook being partly visible on the other side. 

spook

noun
  • A ghost or phantom. 

  • An undercover agent or spy. 

  • A hobgoblin. 

  • A scare or fright. 

  • A psychiatrist. 

  • A player who engages in hole carding by attempting to glimpse the dealer's hole card when the dealer checks under an ace or a 10 to see if a blackjack is present. 

  • A metaphysical manifestation; an artificial distinction or construct. 

verb
  • To frighten or make nervous (especially by startling). 

  • To become frightened (by something startling). 

  • To haunt. 

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