waterway
Synonym discussion
Sense: noun/1
Waterway is the broadest of these terms, covering any navigable body of water — natural or artificial — used for transport. A channel is typically a narrower passage that connects two larger bodies of water (e.g. the English Channel); it may be natural or man-made through dredging. A canal is always deliberately built by people, often for moving goods, water, or both. A seaway is a deep, wide route designed for ocean-going ships, such as the St. Lawrence Seaway. In practice: 'The Mississippi River is a major waterway for grain shipments.' — waterway highlights the transport role. 'They dug a canal to link the factory to the river.' — canal signals human construction. 'The tanker passed through the narrow channel.' — channel implies a constrained passage.
Common collocations
Etymology
Waterway is a compound of water (from Old English wæter) and way (from Old English weg, meaning path or route). The word has been used since the Middle English period to describe a stretch of water used as a travel route for boats.