We often confuse the earthenware, pottery and ceramics. This brings up a shortcut to conclude the three is the same. Ceramic become downhearted designation to represent pottery and earthenware. Many can be drawn from the literature of understanding if the pottery is clay objects shaped container that is burned with hot temperatures around 500 degrees Celsius. Another opinion said, in general utensil processed in this way is called ceramics.
Another conclusion is rather soft and we can be a reference is to differentiate based on the materials, the combustion process, and finishing stages. First we recognize objects as porcelain - made from white clay or kaolin is burned at a temperature of about 1,500 degrees Celsius. Then there stoneware made from rocks and burned with a temperature of about 1,000 degrees Celsius for example, we recognize on the type of stone plates. The latter Earthenware is made of clay and burnt with temperatures around 500 degrees Celsius, pottery fall into this category.