disengagement vs vow

disengagement

noun
  • Termination of an agreement to be married. 

  • Withdrawal from combat, confrontation, or the assertion of influence. 

  • The release or separation of a chemical. 

  • A circular movement of the blade that blocks an opponent's parry. 

  • The emergence of the fetus from the birth canal. 

  • Release or detachment from a physical situation or other involvement. 

vow

verb
  • To declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation. 

  • To make a vow; to promise. 

  • To make a vow regarding (something). 

noun
  • A solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order. 

  • A declaration or assertion. 

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