India
India is home to two major language families: Indo-Aryan (spoken by about 74% of the population) and Dravidian (spoken by 24% of the population). Other languages spoken in India come from the Austroasiatic and Sino-Tibetan language families. India has no national language. Hindi, with the largest number of speakers, is the official language of the government. English is used extensively in business and administration and has the status of a "subsidiary official language"; it is important in education, especially as a medium of higher education. Each state and union territory has one or more official languages, and the constitution recognises in particular 22 "scheduled languages".
Hindustani language
Standard Hindi, one of the official languages of India, is based on the Kharibol dialect of the Delhi region and differs from Urdu in that it is usually written in the indigenous Devanagari of India and exhibits less Persian and Arabic influence than Urdu. It has a literature of 500 years, with prose, poetry, religion and philosophy, under the Bahmani Kings and onwards. It is prevalent all over the Deccan Plateau.
Note that the term "Hindustani" has generally fallen out of common usage in modern India, except to refer to "Indian" as a nationality and a style of Indian classical music prevalent in northern India. The term used to refer to it is "Hindi" or "Urdu", depending on the religion of the speaker, and regardless of the mix of Persian or Sanskrit words used by the speaker. One could conceive of a wide spectrum of dialects and registers, with the highly Persianised Urdu at one end of the spectrum and a heavily Sanskrit-based dialect, spoken in the region around Varanasi, at the other end. In common usage in India, the term "Hindi" includes all these dialects except those at the Urdu spectrum. Thus, the different meanings of the word "Hindi" include, among others: