First off, let's define what a cart and a trolley are. A cart is essentially a four-wheeled vehicle designed for carrying goods, usually pulled or pushed by a person. It can be made of various materials such as wood, metal or plastic and comes in different sizes and shapes. On the other hand, a trolley is a small platform with wheels that can move along a track or on the floor. Trolleys also come in different sizes and shapes, but they typically have a single handle for pushing and pulling.