The primary difference between ice and water is that water does not have a specific pattern of molecules, while ice has a particular crystalline structure. Ice is a solid form of water, regardless of how it formed or how the molecules are clustered together. A water molecule is derived from two hydrogen atoms and one oxygen atom, and then they are bonded together.
In its natural state, water is a liquid. The hydrogen atoms within the water molecules are perpetually forming and breaking. This process is why water does not hold a stable structure, and it sticks to its fluid appearance. On the other hand, ice contains a rigid lattice structure.
It appears in a myriad of forms. The most prevalent of which is the hard- clear crystals that come in cubes, which we get from our freezers at home. When the ice melts, it turns into drinking water.