Bicameral Legislature refers to a legislative body that is divided into two chambers or houses. In such a system, the legislative powers are divided between the two chambers, and both chambers must agree on proposed legislation before it can become law.

Lower and Upper Chamber:
The two chambers of a bicameral legislature are typically known as the Lower House and Upper House. The Lower House is usually more representative of the people, with members being elected by the public. The Upper House, on the other hand, is often less representative and may have members who are appointed or elected by different means, such as by state or regional governments.

Example:
In the US, the Lower House is the House of Representatives, and the Upper House is the Senate. In India, the Lower House is the Lok Sabha, and the Upper House is the Rajya Sabha.

Advantages of Bicameral Legislature:
- A bicameral legislature provides checks and balances, ensuring that legislation is thoroughly scrutinized before it becomes law.
- The two chambers may have different perspectives and represent different constituencies, thus ensuring that a wider range of views is considered in the legislative process.
- The Upper House may act as a revising chamber, scrutinizing and improving proposed legislation.

Disadvantages of Bicameral Legislature:
- A bicameral legislature can lead to delays in the legislative process, as both chambers must agree on proposed legislation.
- The Upper House may be less representative of the people and may not reflect the popular will as accurately as the Lower House.
- The system can be more expensive, as there are two chambers to maintain.

Conclusion:
Overall, a bicameral legislature is a system of government that can help ensure that proposed legislation is thoroughly scrutinized and that a wide range of views are considered. However, it also has its disadvantages, and each country must determine whether a bicameral system is appropriate for its unique circumstances.