flume vs waterway

flume and waterway both are nouns.

Word	Noun	Adjective	Verb	Adverb
flume	Yes	No	No	No
waterway	Yes	No	No	No

As nouns, waterway is a hypernym of flume; that is, waterway is a word with a broader meaning than flume:

flume: watercourse that consists of an open artificial chute filled with water for power or for carrying logs
waterway: a conduit through which water flows

Other hypernyms of flume include watercourse.

flume (noun)	waterway (noun)
watercourse that consists of an open artificial chute filled with water for power or for carrying logs	a conduit through which water flows
a narrow gorge with a stream running through it	a navigable body of water