chock vs disperse

chock

verb
  • To make a dull sound. 

  • To stop or fasten, as with a wedge, or block; to scotch. 

  • To insert a line in a chock. 

adv
  • Entirely; quite. 

noun
  • Any fitting or fixture used to restrict movement, especially movement of a line; traditionally was a fixture near a bulwark with two horns pointing towards each other, with a gap between where the line can be inserted. 

  • Any object used as a wedge or filler, especially when placed behind a wheel to prevent it from rolling. 

disperse

verb
  • To break up and disappear; to dissipate. 

  • To scatter in different directions. 

  • To disseminate. 

  • To separate rays of light, etc., according to wavelength; to refract. 

  • To distribute throughout. 

adj
  • Scattered or spread out. 

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