The Swedish Parliament is also referred to as the Riksdag in Swedish. In historical texts, it has also been referred to as the Diet of Sweden or the Estates of the Realm. However, these terms are outdated and not commonly used today. Another synonym for the Swedish Parliament is the national assembly, which is an appropriate description of its function as the supreme legislative body in the country. Additionally, the Swedish Parliament is sometimes called the Swedish congress or Swedish legislature, mirroring the terms used to refer to similar institutions in other countries. Regardless of the name used, the Swedish Parliament remains an essential part of the country's political system.