choctaw river
coldwater waterway
A canal can be called an artificial waterway.
Bering Strait
Three example names for a waterway: stream, river, canal.
Moat
it is called the waterway that went from Europe and Asia and was not real. :)
canal
Straight of Gibralter
The River Clyde.
Horses, and foot
man-made waterway: canal, aqueduct, lock system
The Amazon River