disappear vs disperse

disappear

verb
  • To vanish. 

  • To make vanish; especially, to abduct and murder surreptitiously for political reasons. 

  • To go missing; to become a missing person. 

  • To go away; to become lost. 

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 disappear and disperse occurred in a corpus of books? (source: Google Ngram Viewer )