sentence: Lamps usually work with electricity, using a lightbulb.
sentences_before: A 'lamp' is a device that makes light and heat.
sentences_after: In the United States, a lamp is usually considered a desk lamp or floor lamp. Other sources of light are called 'lights', such as streetlights, flashlights, and headlights, which in some countries are called streetlamps, torches and headlamps.
concept_name: lamp
headings: Lamp
categories: Furniture Lamps