Drywall, also known as gypsum board or plasterboard, is a common building material used to create interior walls and ceilings. It is made of a core of gypsum sandwiched between two sheets of paper, and comes in various thicknesses and sizes. Drywall is relatively easy to install and can be cut to fit any space. The process of drywall installation involves measuring and cutting the sheets to fit the desired area, screwing them into place, and then covering the seams and screw heads with joint compound and tape. Once the compound has dried, the surface can be sanded and painted or textured. Drywall is popular due to its affordability, versatility, and ease of installation, and is commonly used in residential and commercial construction.