Window type is a term used to describe the different types of windows available for installation in a home. The four most common window types are ORIEL (5 letters), DORMER (6 letters), BAY (3 letters), and CASEMENT (8 letters). ORIEL windows are typically rectangular in shape and protrude from the wall, often with decorative features. DORMER windows are similar to ORIEL windows, but they are usually installed on sloped roofs. BAY windows are three-paneled windows that project outward from the wall, creating a small alcove inside the home. CASEMENT windows are hinged on one side and open outward like a door.