Difference between dumb wait and dumb waiter?

A "dumbwait" typically refers to a small platform or lift used to transport food, dishes, or other items between different levels of a building, often in restaurants or homes. In contrast, a "dumb waiter" is specifically the same type of device, but the term is more commonly used in restaurant or hospitality contexts. Both terms describe the same functional item, but "dumb waiter" tends to be the preferred term in contemporary usage.