sluicegate vs sluice valve

sluicegate and sluice valve both are nouns.

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

As nouns, sluicegate and sluice valve are synonyms defined as:

sluicegate and sluice valve: regulator consisting of a valve or gate that controls the rate of water flow through a sluice

Other synonyms of sluicegate include floodgate, head gate, penstock, water gate.

sluicegate (noun)	sluice valve (noun)
regulator consisting of a valve or gate that controls the rate of water flow through a sluice	regulator consisting of a valve or gate that controls the rate of water flow through a sluice