curb vs gravel

curb

noun
  • 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. 

  • Something that checks or restrains; a restraint. 

  • 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. 

gravel

noun
  • A lameness in the foot of a horse, usually caused by an abscess. 

  • A type or grade of small rocks, differentiated by mineral type, size range, or other characteristics. 

  • A particle from 2 to 64 mm in diameter, following the Wentworth scale. 

  • Inability to see at night; night blindness. 

  • gravel cycling, a discipline in cycling different from road cycling, mountain biking or cyclocross, for a large part on gravel roads, typically with a dedicated gravel bike 

  • Small fragments of rock, used for laying on the beds of roads and railways, and as ballast. 

verb
  • To check or stop; to confound; to perplex. 

  • To hurt or lame (a horse) by gravel lodged between the shoe and foot. 

  • To apply a layer of gravel to the surface of a road, etc. 

  • To puzzle or annoy. 

  • To run (as a ship) upon the gravel or beach; to run aground; to cause to stick fast in gravel or sand. 

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