A rotor shaft is an integral component of a machine that enables it to rotate. It is a vital part of a motor, pump, or generator and undergoes a considerable amount of stress during its operation. There are various synonyms for the word rotor shaft, including the terms drive shaft, propeller shaft, and output shaft. Drive shaft, commonly used in vehicles, connects the transmission system to the wheels. A propeller shaft, on the other hand, is a long shaft that runs through the hull of a boat and drives its propeller. An output shaft is a term used in motors or generators, where it serves as a connection point for power transfer. These synonyms are frequently employed in mechanical and engineering applications and are crucial for understanding the technical aspects of machines.