sluice vs sluice valve

sluice and sluice valve both are nouns.

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

sluice (noun)	sluice valve (noun)
conduit that carries a rapid flow of water controlled by a sluicegate	regulator consisting of a valve or gate that controls the rate of water flow through a sluice

sluice (verb)	sluice valve (verb)
irrigate with water from a sluice
draw through a sluice
transport in or send down a sluice
pour as if from a sluice