A bearing is a machine component that allows for smooth movement between two parts, typically by reducing friction. It supports rotating or moving parts, such as in wheels or motors, ensuring they operate efficiently. Bearings come in various types, including ball bearings and roller bearings, each designed for specific applications. In addition to mechanical uses, the term "bearing" can also refer to the direction or position of an object in navigation. For example, a sailor might use a compass to determine the bearing of a distant landmark, helping them navigate accurately across the water.