The term CART PART refers to the components of a cart, which is a vehicle used for transporting goods. An AXLE is a rod or spindle that connects two wheels and allows them to rotate together. A WHEEL is a circular object that rotates on an AXLE and is used to move a vehicle. A DRAY is a low, flat-bed wagon, typically pulled by OXEN, used for carrying goods. OXEN are domesticated animals, usually cattle, that are used to pull carts or ploughs.