Something made out of clay and baked in a kiln is a piece of pottery—and the craft of creating it is also pottery. You might make pottery in the arts and crafts tent at camp.
Anything made from clay that's been fired, or baked at a high temperature in a kiln, is pottery. Some pottery is made on a wheel that turns while the potter forms the shape of a bowl or vase. Other pottery is formed with hands or tools that shape the clay. In the 15th century, a pottery was a potter's shed or studio.