Why would windows be counted as doors? I would grant that any solid portal that can be opened and closed to allow access is a door, such as cupboards, junction boxes, and some windows. But many windows are not able to be opened or closed. I wouldn’t think those could count, because that’s the essential function of a door.
By that logic, windows should be included in the door category (‘wheels’ will probably still win though)
Why would windows be counted as doors? I would grant that any solid portal that can be opened and closed to allow access is a door, such as cupboards, junction boxes, and some windows. But many windows are not able to be opened or closed. I wouldn’t think those could count, because that’s the essential function of a door.
What about biological doors? What about valves? Are gates doors? Are manhole covers doors?