cincture vs seat belt

cincture

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

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

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

verb
  • To encircle, or surround. 

  • To girdle (stunt or kill by cutting). 

seat belt

noun
  • A restraining belt attached to a vehicle seat and fastened around occupants in order to keep them in place and decelerate them smoothly rather than suddenly in an accident, mitigating the risk of injury from uncontrolled impact with injurious objects. 

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