Bollywood (Hindi: बॉलीवूड) is the informal term popularly used for the Hindi-language film industry based in Mumbai, India. The term is often incorrectly used to refer to the whole of Indian cinema; it is only a part of the Indian film industry. Bollywood is the largest film producer in India and one of the largest in the world.The name is aportmanteau of Bombay (the former name for Mumbai) and Hollywood, the center of the American film industry.

Bollywood is generally referred to as Hindi cinema, though frequent use of poetic Urdu words is fairly common. There has been a growing presence of Indian English in dialogue and songs as well. It is not uncommon to see films that feature dialogue with English words and phrases, or even whole sentences.