Bollywood is the sobriquet of the Hindi language film industry, based in Mumbai, India. The term is often incorrectly used as synecdoche to refer to the whole of Indian cinema; however, it is only a part of the large Indian film industry, which includes other production centres producing films in many languages. Bollywood is one of the largest film producers in India and one of the largest centres of film production in the world. It is more formally referred to as Hindi Film cinema