instep vs shoe

instep

noun
  • A section of any footwear covering that part of the foot. 

  • In horses, the hind leg from the ham to the pastern joint. 

  • The arched part of the top of the foot between the toes and the ankle. 

shoe

noun
  • A protective covering for the foot, with a bottom part composed of thick leather or plastic sole and often a thicker heel, and a softer upper part made of leather or synthetic material. Shoes generally do not extend above the ankle, as opposed to boots, which do. 

  • The outer cover or tread of a pneumatic tire, especially for an automobile. 

  • A band of iron or steel, or a ship of wood, fastened to the bottom of the runner of a sleigh, or any vehicle which slides on the snow. 

  • A pneumatic tire, especially for an automobile. 

  • A piece of metal designed to be attached to a horse's foot as a means of protection; a horseshoe. 

  • Part of a current collector on electric trains which provides contact either with a live rail or an overhead wire (fitted to a pantograph in the latter case). 

  • A trough-shaped or spout-shaped member, put at the bottom of the water leader coming from the eaves gutter, so as to throw the water off from the building. 

  • A drag, or sliding piece of wood or iron, placed under the wheel of a loaded vehicle, to retard its motion in going down a hill. 

  • The part of a railroad car brake which presses upon the wheel to retard its motion. 

  • An iron socket or plate to take the thrust of a strut or rafter. 

  • A device for holding multiple decks of playing cards, allowing more games to be played by reducing the time between shuffles. 

  • A plate, or notched piece, interposed between a moving part and the stationary part on which it bears, to take the wear and afford means of adjustment; called also slipper and gib. 

  • An inclined trough in an ore-crushing mill. 

  • An ingot of gold or silver shaped somewhat like a traditional Chinese shoe, formerly used in trade in the Far East. 

  • A trough or spout for conveying grain from the hopper to the eye of the millstone. 

  • Something resembling a shoe in form, position, or function, such as a brake shoe. 

  • An iron socket to protect the point of a wooden pile. 

verb
  • To put shoes on one's feet. 

  • To equip an object with a protection against wear. 

  • To put horseshoes on a horse. 

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