roust vs spook

roust

verb
  • to rout out of bed; to rouse 

  • to arrest 

  • To harass, to treat in a rough way. 

  • to drive strongly 

noun
  • A strong tide or current, especially in a narrow channel. 

spook

verb
  • To haunt. 

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

  • To become frightened (by something startling). 

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. 

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