Bicameral Legislature: A legislature that is divided into two separate and distinct chambers or houses, such as the U.S. Congress with the House of Representatives and the Senate.
Unicameral Legislature: A legislature with a single chamber, rather than a bicameral system with two chambers.
Congressional Representation: The system of electing members to the U.S. Congress, where each state is allocated a number of representatives in the House proportional to its population.