disengage vs pull apart

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 

pull apart

verb
  • to become separated as a result of pulling 

  • to separate two people or animals that are fighting 

  • Used other than figuratively or idiomatically: see pull, apart. 

  • to dismantle a machine or other mechanical device. 

  • to rigorously investigate the basis of an idea or theory. 

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