What is the difference between them? Example... Can I take a photos in which I intend to capture buildings but there are people in the frame and consider is Cityscape? What about Street Photography.. Can I take a photo in which I focus on a particular part of a narrow between 2 building that I might find interesting but there are no one there? Or for example.. take a photo of a corner in which there are many cars but no people walking or doing something? I've been debating on these lately.. Anyone?