Ambient Lighting
Ambient Light is designed to splay light in all directions and is usually good for close to ceiling applications.
Down Lighting
Down Lighting directs light downwards by using open bottom shades to minimize the amount of light that is projected upwards towards the ceiling.
Up / Down Lighting
Up / Down Lighting chandeliers generally will have bulbs on the arms and either a bowl or another light source in the center of the fixture. These chandeliers are good for installation in open areas where light is helpful in both directions such as near a staircase.
Up Lighting
Up Lighting is a common type of chandelier and although the light is being directed upwards will still provide ample illumination for many applications. Some manufacturers offer chandeliers in both up lighting and down lighting styles.