The term 'WAY BETWEEN FLOORS' can be solved by two different crossword solutions: STAIRS (6 letters) and STAIR (5 letters). STAIRS are a common architectural feature that provide a way to move between different levels of a building. They are typically made up of steps, which are connected by a railing or handrail for safety. Staircases can be straight, curved, or spiral in shape, and can be made from a variety of materials such as wood, metal, or stone.