switchyard

As nouns the difference between switch and switchyard

is that switch is a device to turn electric current on and off or direct its flow while switchyard is part of a railway with an arrangement of switches (or points) allowing trains to be diverted and reassembled.

As a verb switch

is to exchange.

As an adjective switch

is riding with their opposite foot forward from their natural position.

As nouns the difference between railway and switchyard

is that railway is a track, consisting of parallel rails, over which wheeled vehicles such as trains may travel while switchyard is part of a railway with an arrangement of switches (or points) allowing trains to be diverted and reassembled.