When you imagine a special space in your home, what does it look like? Is it flooded with light from a beautiful bay window? Or is it a bow window? Is there a difference? Bay and Bow windows are often confused for each other. They may seem like the same thing, but there are differences between the two types of windows, including price. How do you know which type is right for you and your budget? Bay Windows Bay windows are a set of at least three windows, two on the side and one larger picture window. The center window.