Yes, 50mm is a normal lens, but telephoto is a lens design. It doesn't have anything to do with focal length. Even some wide angle lenses have a telephoto desig

Yes, 50mm is a normal lens, but telephoto is a lens design. It doesn't have anything to do with focal length. Even some wide angle lenses have a telephoto design! It is true that telephoto designs are usually used on long lenses, however, and for normal lenses on 35mm you don't usually employ telephoto designs.