sluice vs douse

sluice is a noun but douse is not a noun.

Word	Noun	Adjective	Verb	Adverb
sluice	Yes	No	Yes	No
douse	No	No	Yes	No

As verbs, douse is a hypernym of sluice; that is, douse is a word with a broader meaning than sluice:

Other hypernyms of sluice include dowse, drench, soak, sop, souse.

sluice (noun)	douse (noun)
conduit that carries a rapid flow of water controlled by a sluicegate

sluice (verb)	douse (verb)
irrigate with water from a sluice	cover with liquid; pour liquid onto
draw through a sluice	slacken
transport in or send down a sluice	lower quickly
pour as if from a sluice	immerse briefly into a liquid so as to wet, coat, or saturate
	dip into a liquid
	wet thoroughly
	put out, as of a candle or a light