runner vs trainer

runner

noun
  • A type of soft-soled shoe originally intended for runners. 

  • Somebody who controls or manages (e.g. a system). 

  • A player who runs for a batsman who is too injured to run; he is dressed exactly as the injured batsman, and carries a bat. 

  • Anyone sent on an errand or with communications, especially for a bank (or, historically, a foot soldier responsible for carrying messages during war). 

  • A short sling with a carabiner on either end, used to link the climbing rope to a bolt or other protection such as a nut or friend. 

  • An automobile; a working or driveable automobile. 

  • A competitor in a poker tournament. 

  • A person or vessel who runs blockades or engages in smuggling. (Especially used in combination, e.g. gunrunner). 

  • Part of a shoe that is stitched to the bottom of the upper so it can be glued to the sole. 

  • A speedrunner. 

  • A long, narrow carpet for a high traffic area such as a hall or stairs. 

  • An employee of a sports agent who tries to recruit possible player clients for the agent. 

  • A quick escape away from a scene. 

  • A rope to increase the power of a tackle. 

  • A person who moves, on foot, at a fast pace, especially an athlete. 

  • Any entrant, person or animal (especially a horse), for a race or any competition; a candidate for an election. 

  • An idea or plan that has potential to be adopted or put into operation. 

  • A part of a cigarette that is burning unevenly. 

  • A baserunner. 

  • One who runs away; a deserter or escapee. 

  • The blade of an ice skate. 

  • The channel or strip on which a drawer is opened and closed. 

  • Part of a mechanism which allows something to be pulled out for maintenance. 

  • The curved base of a rocking chair. 

  • In saddlery, a loop of metal through which a rein is passed. 

  • In molding, a channel cut in a mold. 

  • The rotating-stone of a grinding-mill. 

  • The movable piece to which the ribs of an umbrella are attached. 

  • A tool in which lenses are fastened for polishing. 

  • A long stolon sent out by a plant (such as strawberry), in order to root new plantlets, or a plant that propagates by using such runners. 

  • A running gag 

  • A part of an apparatus that moves quickly. 

  • A smooth strip on which a sledge runs. 

  • A leaping food fish (Elagatis pinnulatis) of Florida and the West Indies; the skipjack, shoemaker, or yellowtail. 

  • A restaurant employee responsible for taking food from the kitchens to the tables. 

  • A person hired by a gambling establishment to locate potential customers and bring them in. 

  • A person (from one or the other team) who runs out onto the field during the game to take verbal instructions from the coach to the players. A runner mustn't interfere with play, and may have to wear an identifying shirt to make clear his or her purpose on the field. 

  • A strip of fabric used to decorate or protect a table or dressing table. 

trainer

noun
  • A running shoe or sneaker. 

  • A person responsible for treating injuries sustained by players during matches; a physiotherapist. 

  • A person who trains another; a coach. 

  • A patch for a video game that applies cheats. 

  • A piece of indoor equipment allowing a bicycle to be ridden while stationary. 

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