Down: a surface mounted relative to the normal lighting of lamps with focusing more generally used for general lighting or auxiliary lighting.

Spotlight: a highly concentrating lamps, its light exposure is having to specify a specific target.

Floodlights: a can in all directions uniformly irradiated "point source", its illuminated area can be adjusted to produce the object can cast shadows.

Spotlights: floodlights, it is rather relative to a condensing appliance.