disengage vs dissociate

disengage

verb
  • To release or loosen from something that binds, entangles, holds, or interlocks. 

noun
  • A circular movement of the blade that avoids the opponent's parry 

dissociate

verb
  • To make unrelated; to sever a connection; to separate. 

  • To undergo dissociation. 

  • To part; to stop associating. 

  • To separate compounds into simpler component parts, usually by applying heat or through electrolysis. 

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