#railroad_train__train  public transport provided by a line of railway cars coupled together and drawn by a locomotive; "express trains don't stop at Princeton Junction"
  supertype:  public_transport  conveyance for passengers or mail or freight
  member:  railroad_car  railway_locomotive
  subtype:  boat_train  a train taking passengers to or from a port
  subtype:  car_train__cartrain  a train that transports passengers and their automobiles
  subtype:  freight_train__freighttrain__rattler  a railroad train consisting of freight cars
     subtype:  freight_liner__freightliner__liner_train__linertrain  a long-distance express freight train between industrial centers and seaports with facilities for rapid loading and unloading of goods
  subtype:  hospital_train  a military train built to transport wounded troops to a hospital
  subtype:  mail_train  a train that carries mail
  subtype:  passenger_train__passengertrain  a train that carries passengers
     subtype:  commuter_train__commuter  a passenger train that is ridden primarily by commuters
  subtype:  streamliner  a streamlined train
  subtype:  subway_train  a train that runs in a subway system

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