stylistic:tone, linguistic:voice_change
Hindi and Urdu

In addition, several other dialects or languages are classified under Hindi that did not descend from it. Standard Hindi and Urdu are based on Khari Boli, the dialect spoken around Delhi. Other dialects with high mutual intelligibility spoken in surrounding areas include Haryanvi and languages from Western Uttar Pradesh, like Braj Bhasha. But many languages less similar to Standard Hindi do not have official status under the 8th Schedule to the Constitution of India and are instead classified as dialects of Hindi. This includes Bhojpuri, spoken in Eastern Uttar Pradesh and Bihar, which does not have official status in either state or in the 8th Schedule, despite being spoken by over 50 million people. But over time, more languages have been recognized as distinct from Hindi. Maithili was made a scheduled language of India in 2003, and Chhattisgarhi was made official in Chhattisgarh.