Lean-tos are a type of shelter that are typically constructed with a sloping roof and one or two walls. They are often used as temporary dwellings, and can be made from a variety of materials such as wood, metal, or canvas. Sheds, which are five letters long, are similar to lean-tos in that they are usually constructed with a sloping roof and one or two walls, but they are more permanent structures and are typically made from wood or metal. ELLS, which are four letters long, are also similar to lean-tos, but they are usually constructed with three walls and a flat roof. SHANTIES, which are eight letters long, are also similar to lean-tos, but they are typically constructed with a sloping roof and two or three walls, and are usually made from wood or canvas.