Stibium is a chemical element with the symbol Sb and atomic number 51. It is commonly known as antimony. The word antimony has been derived from the Greek words "anti" meaning against and "monos" meaning alone, as the element resists blending with other elements. Besides antimony, it is also referred to as "gray ore," "black antimony," and "kohl." The element is widely used in several applications, from crafting alloys to producing flame retardants, batteries, and semiconductors. Antimony is also an essential ingredient in the production of pewter, a popular metal alloy used for crafting household items and jewelry.