Gypsum board is a lightweight building panel made from a gypsum core covered with durable paper. It is widely used for interior walls, ceilings, and partitions in residential, commercial, and office buildings. It provides a smooth surface for painting and decoration, is easy to install, offers good fire resistance and sound insulation, and is available in standard, moisture-resistant, and fire-resistant types. It is commonly used for ceiling designs, drywall systems, and interior finishing projects.