While calcium is commonly known by its elemental name, the reference provided focuses on one of its compounds, calcium oxide (CaO). Calcium oxide, also known as lime or quicklime, is not another name for calcium itself, but is a compound that contains calcium. The reference notes that quicklime is a white or grayish-white solid produced by heating calcium carbonate. Calcium is a metallic chemical element, not a compound.
Therefore, a direct synonym or alternative name for the element calcium is not provided in the reference.
