High Quality Content by WIKIPEDIA articles! Hindi-Urdu, also Hindustani (????????????, ?????????, Hindustani, IPA: , literally: "of Hindustan"), is an Indo-Aryan language and the lingua franca of North India and Pakistan. and known historically, as Hindavi or Rekhta. It derives primarily from the Khariboli dialect of Delhi, and incorporates a large amount of vocabulary from Persian, Arabic, Sanskrit and Turkic. It is a pluricentric language, with two official forms, Standard Hindi and Standard Urdu, which are standardized registers of it. The colloquial languages are all but indistinguishable, and even the official standards are nearly identical in grammar, though they differ in literary conventions and in academic and technical vocabulary, with Urdu retaining stronger Persian, Central Asian and Arabic influences, and Hindi relying more heavily on Sanskrit. Before the Partition of India, the terms Hindustani, Urdu, and Hindi were synonymous; all covered what would be called Urdu and...