disassociate vs segregate

disassociate

verb
  • To separate (oneself); to dissolve one's association with a person, group, or situation. 

  • To separate into smaller discrete units, as with analysis. 

  • To separate; to disunite; to disintegrate; to dissolve. 

segregate

verb
  • To separate, especially by social policies that directly or indirectly keep races or ethnic groups apart. 

adj
  • Separated from others of the same kind. 

  • Separate from a mass and collected together along lines of fraction. 

  • Separate; select. 

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