What is the nickname for films produced in Mumbay, India?

Explanation

Bollywood is the nickname for the part of the Indian film industry that is based in Mumbai. The name Bollywood is a contraction of Bombay (the city of Mumbai used to be called Bombay) and Hollywood. Not all Indian films are Bollywood-films. Tamil, Bengal and Telugu films are not, for instance, whilst Hindi films are. The term is popularly used about Hindi films contained lots of dance and singing.