bridle vs curb

bridle

noun
  • A restraint; a curb; a check. 

  • The headgear with which a horse is directed and which carries a bit and reins. 

  • A length of line or cable attached to two parts of something to spread the force of a pull, as the rigging on a kite for attaching line. 

  • A mooring hawser. 

  • A piece in the interior of a gunlock which holds in place the tumbler, sear, etc. 

  • A gesture expressing pride or vanity. 

verb
  • To hold up one's head proudly or affectedly. 

  • To check, restrain, or control with, or as if with, a bridle; as in bridle your tongue. 

  • To show hostility or resentment. 

  • To put a bridle on. 

curb

noun
  • Something that checks or restrains; a restraint. 

  • A swelling on the back part of the hind leg of a horse, just behind the lowest part of the hock joint, generally causing lameness. 

  • A concrete margin along the edge of a road; a kerb (UK, Australia, New Zealand) 

  • A riding or driving bit for a horse that has rein action which amplifies the pressure in the mouth by leverage advantage placing pressure on the poll via the crown piece of the bridle and chin groove via a curb chain. 

  • A sidewalk, covered or partially enclosed, bordering the airport terminal road system with adjacent paved areas to permit vehicles to off-load or load passengers. 

  • A raised margin along the edge of something, such as a well or the eye of a dome, as a strengthening. 

verb
  • To rein in. 

  • To bend or curve. 

  • To furnish with a curb, as a well; to restrain by a curb, as a bank of earth. 

  • To crouch; to cringe. 

  • To damage vehicle wheels or tires by running into or over a pavement curb. 

  • To check, restrain or control. 

  • To bring to a stop beside a curb. 

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