A lighting device is a tool used to produce light in a specific area or space. There are different types of lighting devices such as lamps, light bulbs, flashlights, and LED lights. Apart from these commonly used lighting devices, there are many other options that are often used as synonyms for lighting devices. These include illumination sources, luminaires, light fixtures, light emitters, light sources, and lighting instruments. These terms are often used interchangeably to describe a wide array of lighting devices that fulfill different requirements based on the lighting needs, energy use, life span, and intensity of the light required.