circulate vs disperse

circulate

verb
  • to spread or disseminate 

  • Of decimals: to repeat. 

  • to move in circles or through a circuit 

  • to cause (a person or thing) to move in circles or through a circuit 

  • to become widely known 

  • to move from person to person, as at a party 

disperse

verb
  • To disseminate. 

  • To break up and disappear; to dissipate. 

  • To scatter in different directions. 

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

  • To distribute throughout. 

adj
  • Scattered or spread out. 

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