I think it is called freezing
The name for solid water is ice. It changes to a liquid when it melts.
Ice.
Melting.
The process by which water (liquid) changes into Water vapor (gas) is called Evaporation.
sublimation
MELTING is the term for the process where water changes from a solid into a liquid.
deposition
This physical change is called freezing.
melting point
The process by which water vapor changes directly to a solid is called deposition. During deposition, water vapor skips the liquid phase and turns directly into ice or frost on a surface.
It all depends-if it changes to solid it is called Freezing point and that of water is 0 degrees and if it changes to gas it is called Boiling Point.
When water changes into a solid it becomes a solid!