Waterway vs. Aqueduct

Waterwaynoun

A conduit or watercourse, such as on the deck of a ship, to drain water.

Aqueductnoun

A structure carrying water over a river or depression, especially in regards to ancient aqueducts.

Waterwaynoun

Heavy plank or timber extending fore and aft the whole length of a vessel's deck at the line of junction with the sides, forming a channel to the scuppers, which are cut through it. In iron vessels the waterway is variously constructed.

Waterwaynoun

a navigable body of water

Waterwaynoun

a conduit through which water flows

Aqueductnoun

a conduit that resembles a bridge but carries water over a valley