Drywall and plasterboard essential refer to the same product, commonly used for lining walls and ceilings. The primary difference lies in the terminology. In the UK, it’s typically called “plasterboard”, while in the US and some other countries, it’s known as “drywall”. Both are made of a gypsum core, sandwiched between paper linings. Regardless of the name, they serve the same purpose: providing a smooth, durable surface that’s easy to install and decorate.