Final answer:
A dolly is a wheeled platform with a camera that enables smooth, dynamic shots in film and video. Unlike a tripod or monopod which only offer stability, a dolly provides motion.
Step-by-step explanation:
A wheeled platform with a mounted camera used to make a tracking shot is known as a dolly. Unlike stationary supports like tripods and monopods, a dolly allows for smooth movement and is often used in film and video production to create dynamic and fluid shots. Tripods and monopods also provide stability to camera equipment, but they do not enable the same type of motion that a dolly does.