Webster says… Corridor ~ a long passage inside a building with doors on each side & Hallway ~ a long narrow passage inside a building with doors along it leading to rooms.
Whatever you want to call it, for safety reasons you want good lighting. If your hallway is not well-lit, trips to the kitchen or bathroom in the middle of the night can end in tripping or falling. In order to safely light up this area, a fixture should be installed every 8 to 10 feet.
The main hallway is where visitors will get their first impression of your home so you want your lighting to create a warm and welcoming effect. With so many beautiful semi-flush, flush mounts and wall sconces available, why not make this part of your home as stunning as the other rooms in your home.