waterway vs canal

waterway and canal both are nouns.

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

As nouns, canal is a hyponym of waterway; that is, canal is a word with a more specific, narrower meaning than waterway:

Other hyponyms of waterway include flume, headrace, tailrace.

waterway (noun)	canal (noun)
a conduit through which water flows	long and narrow strip of water made for boats or for irrigation
a navigable body of water	a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
	(astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion

waterway (verb)	canal (verb)
	provide (a city) with a canal