Khariboli, also known as Khari Boli or simply Khari, Dehlavi, Kauravi, and Vernacular Hindustani, is the prestige dialect of Hindustani, of which Standard Hindi and Standard Urdu are standard registers and literary styles, which are the principal official languages of India and Pakistan respectively. The term "Khariboli" has, however, been used for any literary dialect, including Braj Bhasa and Awadhi. As a dialect of Hindustani, Khariboli is a part of the Western group of the Central Zone (Hindi Zone) of Indo-Aryan languages. It is spoken mainly in India in the rural area surrounding Delhi, Western Uttar Pradesh, southern Uttarakhand, and Rajasthan.