What are tornadoes called when they form over water?

Tornadoes that form over water are called waterspouts. There are three categories of waterspouts: tornadic waterspouts which form downward over water and have the probability to move from land to water, fair weather waterspouts which move very little, usually upward, since they only form in light wind conditions and snowspout or winter waterspout which forms during winter and under the base of a snow squall.

Studies revealed that waterspouts have a five-part cycle – the first one is wherein it forms over a dark spot on the surface of the water, then once formed it will spiral to the water surface, form a spray ring, after which it will develop a condensation funnel which is visible, and then it will dissipate afterwards.