disengage vs evert

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 

evert

verb
  • To turn inside out (like a pocket being emptied) or outwards. 

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