correspond vs disassociate

correspond

verb
  • To be equivalent or similar in character, quantity, quality, origin, structure, function etc. 

  • to exchange messages, especially by postal letter, over a period of time. 

disassociate

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

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

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

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