curb vs spur

curb

noun
  • 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. 

  • 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 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. 

spur

noun
  • Anything that inspires or motivates, as a spur does a horse. 

  • A curved piece of timber serving as a half to support the deck where a whole beam cannot be placed. 

  • Ergotized rye or other grain. 

  • A tern. 

  • A branch of a vein. 

  • A piece of timber fixed on the bilgeways before launching, having the upper ends bolted to the vessel's side. 

  • Any protruding part connected at one end, for instance a highway that extends from another highway into a city. 

  • A jab given with the spurs. 

  • Roots, tree roots. 

  • A very short branch line of a railway line. 

  • The track of an animal, such as an otter; a spoor. 

  • A projection from the round base of a column, occupying the angle of a square plinth upon which the base rests, or bringing the bottom bed of the base to a nearly square form. It is generally carved in leafage. 

  • A wall in a fortification that crosses a part of a rampart and joins to an inner wall. 

  • A mountain that shoots from another mountain or range and extends some distance in a lateral direction, or at right angles. 

  • A rigid implement, often roughly y-shaped, that is fixed to one's heel for the purpose of prodding a horse. Often worn by, and emblematic of, the cowboy or the knight. 

  • A spiked iron worn by seamen upon the bottom of the boot, to enable them to stand upon the carcass of a whale to strip off the blubber. 

  • An appendage or spike pointing rearward, near the foot, for instance that of a rooster. 

  • A brace strengthening a post and some connected part, such as a rafter or crossbeam; a strut. 

  • A short branch road of a motorway, freeway or major road. 

  • The short wooden buttress of a post. 

  • A spurious tone, one that interferes with a signal in a circuit and is often masked underneath that signal. 

  • A short thin side shoot from a branch, especially one that bears fruit or, in conifers, the shoots that bear the leaves. 

verb
  • To urge or encourage to action, or to a more vigorous pursuit of an object 

  • To press forward; to travel in great haste. 

  • To prod (especially a horse) on the side or flank, with the intent to urge motion or haste, to gig. 

  • To form a spur (senses 17-18 of the noun) 

  • To put spurs on. 

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