Lighting 

Top Lighting is when the main source of lighting comes from above - highlighting the features , is used to create a glamorous.

Under lighting is when the main source comes from down below the subject. it is used in thrillers and horror films.

Back Light helps counteract the effect of the key light or creates an outline or silhouett.

Filler light helps to soften the harsh shadows that the use of key and back lights create.

Key light is the brightest and most influential.