Punjabi is an Indo-Aryan language spoken by inhabitants of the historical Punjab region. In Pakistan, Punjabi is the most widely spoken native tongue. Punjabi can be subdivided into two varieties, Eastern Punjabi in both India and Pakistan, and Western Punjabi solely in Pakistan. There are some 104 million native speakers of the Punjabi language; an estimated 76 million in Pakistan and 28 million in India, making it the 10th most widely spoken language in the world. Native speakers of the Punjabi language and their respective diaspora are referred to as ethnic Punjabis. The Punjabi language has different dialects, spoken in the different sub-regions of greater Punjab. The Majhi dialect is Punjabi's prestige dialect and shared by both countries. This dialect is considered as textbook Punjabi and is spoken in the historical region of Majha, centralizing in Lahore and Amritsar. Along with Lahnda and Western Pahari languages, Punjabi is unusual among modern Indo-European languages because it is a tonal language.