Ceramics and pottery are often used interchangeably, but they do have some distinct differences.
Pottery refers to the art and technique of creating objects using clay that is shaped, dried and then fired at high temperatures. Pottery can range from functional items such as dishes, cups and vases, to more decorative pieces such as sculptures. Pottery can be made by hand or by using a pottery wheel, and can be glazed or unglazed.
Ceramics, on the other hand, is a broader term that encompasses pottery as well as other objects created from clay and other inorganic, non-metallic materials that have been hardened by heating. Ceramics can include pottery, but also includes other items such as tiles, refractory bricks, and technical ceramics. These ceramics are often produced in an industrial setting, and may be used for industrial, technical or artistic purposes.
In summary, pottery is a specific subset of ceramics, referring specifically to handmade or wheel-thrown objects that are primarily used for decorative or functional purposes, while ceramics is a broader term that includes pottery as well as other items made from clay and other inorganic, non-metallic materials that have been hardened by heating.