A window is a hole in a wall, door, roof or vehicle that allows the passage of light, sound, and sometimes air. Modern windows are generally glazed or covered in few increased clear or glassy material, a sash set in a frame in the opening the sash and frame are also mentioned to as a window. Windows in effect keep out sound. They form a sound barrier against the exterior. residence have windows to permit fresh air into the area and to change ventilation visualize living in a house with no window it would be solid to respire every minute home have windows for many empirical and enhancing reasons.