disperse vs dwindle

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. 

dwindle

verb
  • To break up or disperse. 

  • To decrease, shrink, diminish, reduce in size or intensity. 

  • To lessen; to bring low. 

  • To fall away in quality; degenerate, sink. 

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