A legislature is a governing body that is charged with creating laws and composed of individuals who represent certain portions of the population. The members of a legislature are usually voted for by those that they represent.
There are two common types of legislature. A presidential legislature, such as the one that exists in the United States, is completely separate from the government's executive position. The members of the legislature are voted on by the population, and the president is separately voted on by the population. With a parliamentary legislature, such as the one that exists in Great Britain, the executive leader is chosen from the legislature. In Great Britain, the monarch appoints the prime minister from the parliament.