apportion vs disperse

apportion

verb
  • To divide and distribute portions of a whole. 

  • Specifically, to do so in a fair and equitable manner; to allocate proportionally. 

disperse

verb
  • To distribute throughout. 

  • 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. 

adj
  • Scattered or spread out. 

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