A black light is a UV emitting bulb. There are other types of UV bulbs, but most have very specific uses, such as: bug lights, tanning bed lamps, drying lamps for lithographic applications and printing, and medical diagnosis. All lamps--incandescent, fluorescent, Mercury vapor, tungsten, etc.-- emit some range of UV light, so could be considered UV lamps, but that is not their specific purpose, and the amounts or levels vary widely.
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