The term TENT BED is a combination of two words, COT and BED. A COT is a small, portable BED that is often used for camping or other outdoor activities. It is usually made of metal or canvas and is designed to be lightweight and easy to transport. A BED, on the other hand, is a larger, more permanent sleeping surface that is typically found in bedrooms. The combination of these two words creates a hybrid sleeping surface that is both lightweight and comfortable.