A "Bogie" refers to a wheeled framework that supports a train's axle and wheels. It plays a crucial role in the train's movement, allowing it to navigate curves and maintain stability on tracks. Bogies can be found on various types of trains, including passenger trains and freight trains, and are designed to enhance safety and performance. In the context of rail transport, bogies are essential for distributing the weight of the train evenly. They come in different designs, such as two-axle and three-axle bogies, depending on the train's requirements. Proper maintenance of bogies is vital for ensuring smooth and efficient train operations.