The term "arc lights" is commonly used to describe a type of lighting that produces an intense, bright light through the use of an electric arc. However, there are several other synonyms that are often used to refer to these types of lights. These include "carbon arc lamps," "electric arc lamps," and "high-intensity discharge lamps." Regardless of the name, these lights are often used in theatrical productions, film sets, and outdoor events due to their ability to produce a bright, even light. They are also used in industrial settings such as shipping yards and construction sites for their reliability and durability.