Ice is the common name for frozen water. Other liquids, such as ammonia or methane or milk, are called 'milk ice', for instance, instead of just 'ice'. Liquid water becomes solid ice when it is very cold. The freezing point is 0° Celsius (32° Fahrenheit or 273 kelvin).
Ice can be made in a home refrigerator or freezer. If water is put in a freezer and left for a while, the water gets very cold and will freeze solid, creating ice. Water can be placed into a copper (or other metal) container to cause it freeze into ice faster. Water can freeze faster than in a plastic ice tray.