different between headlamp vs headlighting

English

head +? lamp

headlamp (plural headlamps)

An individual headlight, particularly of a motor vehicle.
- 1940, Ralph A. Richardson, Optics and Wheels, General Motors Corporation, p. 13
  The automobile headlamp uses either a parabolic reflector or a slight modification of it to obtain a concentrated light beam.
A flashlight worn on the head.

headlighting (countable and uncountable, plural headlightings)

The lighting produced by a headlight.
- 1940, Ralph A. Richardson, Optics and Wheels, General Motors Corporation, p. 13
  Fortunately, reflectors can be polished or replaced if found defective, thereby considerably improving the efficiency of headlighting on older cars.

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