Roof timber is an essential element in construction; it provides a framework and support for the roof's covering. Numerous synonyms exist for roof timber, depending on their shape, size, and usage. For example, rafters are inclined beams that form the primary framework for a roof. Purlins are horizontal beams that support the rafters, while trusses are frameworks made of smaller roof timbers fastened together and used to support large roofs. Other synonyms include king post, ridge beam, collar beam, hip rafter, and valley rafter. Each of these synonyms has specific uses and applications, making them vital in creating strong, durable, and long-lasting roofs.