A parliament is a type of legislature.
The most famous parliament is probably the one in the United Kingdom, which is sometimes called the "Mother of all Parliaments". The word "parliament" comes from the French word parler, which means a talk.
The Althing, the national parliament of Iceland, was founded earlier (930 AD), so it is the oldest legislature in the world still existing. However, the Althing did not function as a legislature for four centuries, and its role as a primary legislature is modern.
The Parliament of the United Kingdom is split into three separate parts, the House of Commons (the lower house), the lords (the upper house) and the Monarch. Most legislative power is concentrated in the House of Commons. It is made up of 650 Members of Parliament (MPs). These people are elected by the people of the United Kingdom to represent them in the House of Commons. The leader of the political party who commands a majority of MPs is usually made the Prime Minister, but not the Head of State, a position reserved for the Sovereign.

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