There are three main types of pottery. Porcelain pottery is hard and impervious to liquids. It resembles glass. Earthenware pottery is made of baked clay. It must have glaze applied to it after baking in order for it to hold liquids.
Terracotta is an example of earthenware and is unglazed. Stoneware pottery is hard, impervious to liquids, and usually translucent. Pottery is also created by hand or on a pottery wheel. The hand techniques include pinch pots, coil pots, and slab pots. Wheel thrown pottery requires more tools and considerable practice. A kiln is used to harden the pots.
