Common sulfur is a yellow, crystalline substance that is widely used in various industries. However, there are many synonyms for this chemical compound. One common alternative name is sulfur powder, which refers to the fine, powdery form of this substance. Additionally, brimstone is a synonym for common sulfur that is derived from the old English term "brynstan," meaning "burning stone." Other synonyms include flowers of sulfur, sublimed sulfur, and sulfur cake. These various names all refer to the same chemical compound, which has numerous applications in the production of fertilizers, chemicals, and pharmaceuticals.