Anthracite coal, also known as hard coal, is a type of coal that is known for its superior heating properties. Synonyms for anthracite coal include black coal, stone coal, and rock coal. These synonyms all refer to the same type of coal and are often used interchangeably. Anthracite coal is different from other types of coal due to its high carbon content, low ash content, and low volatile matter content. It is a commonly used fuel source for home heating and also used in industrial settings. Knowing the synonyms for anthracite coal can be useful when searching for information or purchasing it for personal or industrial use.