Fire clay is a type of clay that can withstand high temperatures and is commonly used in the production of refractory bricks and ceramic products. However, there are several other terms that can be used to refer to fire clay depending on the context. Some synonyms for fire clay include chamotte clay, refractory clay, kaolin clay, and high alumina clay. Chamotte clay refers to the clay that has been fired and digested with various types of shale, sandstone, or other materials while refractory clay is a term that applies to any clay that can withstand high temperatures. Kaolin clay is a type of soft white clay that is also heat resistant, while high alumina clay is specifically high in aluminum oxide, which makes it an excellent option for high-temperature applications.