The graphic on the left is a good study in the various phases
of water as it exists and cycles in nature from the solid, liquid,
and gas states.
Various physical process terms are also indicated which show
the changes in the physical states of water.
Melt - solid to liquid state
Freeze - liquid to solid state
Evaporation - liquid to gas state
Condensation - gas to liquid state
Precipitation - a general weather term usually meaning water