ESP and traction control are two related but different systems. Traction control helps prevent wheel slip by reducing engine power or applying the brakes to individual wheels. It is designed to improve traction on slippery surfaces, such as ice or wet pavement. ESP, on the other hand, is a more advanced system that includes traction control but also monitors the car's stability and intervenes to prevent skidding and loss of control. ESP is a more comprehensive safety feature that provides greater stability and control in a wider range of driving situations.