cincture vs envelopment

cincture

noun
  • An enclosure, or the act of enclosing, encircling or encompassing 

  • The fillet, listel, or band next to the apophyge at the extremity of the shaft of a column. 

  • A girdle or belt, especially as part of a vestment 

verb
  • To encircle, or surround. 

  • To girdle (stunt or kill by cutting). 

envelopment

noun
  • The act of enveloping. 

  • An offensive action in which an attacking force moves over or around the enemy and attacks from the rear; see also pincer movement. 

  • That which envelops; a covering. 

  • An action to seize the opponent's blade in one line and lead it (without losing contact) through a full circle to end in the same line. 

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