What's the name of the small window beside the villa?

Small windows on the side of the villa are called side windows or side windows. According to relevant public information, this kind of window is generally located on the side or back of the villa, which is generally smaller than the front window, and its shape and style may be different. The main function of the side window is to increase the lighting and ventilation effect of the villa, and at the same time, it can also improve the aesthetic and artistic value of the villa. Some villa side windows may also be set in stairwells or corridors for better lighting.