acceptability vs cachet

acceptability

noun
  • The quality of being acceptable; acceptableness. 

  • Operation plan review criterion. The determination as to whether the contemplated course of action is worth the cost in manpower, materiel, and time involved; is consistent with the law of war; and is militarily and politically supportable. (JP 1-02 Department of Defense Dictionary of Military and Associated Terms) 

cachet

noun
  • A special characteristic or quality; prestige, especially via association. 

  • A sealed envelope containing an item whose price is being negotiated. 

  • A commemorative stamped design or inscription on an envelope, other than a cancellation or pre-printed postage. 

  • A capsule containing a pharmaceutical preparation. 

  • A hidden location from which one can observe birds while remaining unseen. 

verb
  • To mark (an envelope) with a commemorative stamped design or inscription. 

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