The senate or upper chamber of a legislative assembly.

The lower house of a bicameral legislature, or the sole assembly in some one-house systems; specifically refers to the U.S. House of Representatives or a Chamber of Deputies.

The lower chamber of a two-house legislature; for example, the House of Commons in the UK or the House of Representatives in the US.

The upper chamber of a bicameral legislature, such as the UK House of Lords or a Senate, which typically holds legislative and executive oversight power; contrasts with the [[下议院|下議院|xia4 yi4 yuan4]].

a member of the lower house of a legislature, specifically a member of parliament (MP) in the UK political system of the United Kingdom

The United States House of Representatives, which is the lower house of the United States Congress

the United States Senate