disengage vs untwine

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 

untwine

verb
  • To free (one thing that is entwined with another), disentangle, extricate. 

  • To become untwisted or disentangled. 

  • To untwist the strands of (something entwined). 

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