Current distribution of Human Language Families A language family is a group of related languages said to have descended from a common proto-language. ... The Indo-European languages comprise a family of several hundred related languages and dialects [1], including most of the major languages of Europe, as well as many spoken in the Indian subcontinent (South Asia), the Iranian plateau (Southwest Asia), and Central Asia. ... The Indo-Iranian language group constitutes the easternmost extant branch of the Indo-European family of languages. ... The Eastern Iranian languages are a subgroup of the Iranian languages emerging in Middle Iranian times (from ca. ... The Southeastern Iranian languages include some 11 (SIL estimate) languages and dialects spoken by about many people in Asia; this language family is a part of the Eastern Iranian language family. ... The Pamir languages are a subgroup of the Iranian languages, spoken in the Pamir Mountains, primarily along the Panj River and its tributaries in the southern Gorno-Badakhshan region of Tajikistan around the administrative center Khorog ( ), and the neighboring Badakhshan province and is in Pamir Area Afghanistan. ... Writing systems of the world today. ... ISO 639-1 is the first part of the ISO 639 international-standard language-code family. ... ISO 639-2 is the second part of the ISO 639 standard, which lists codes for the representation of the names of languages. ... ISO 639-3 is in process of development as an international standard for language codes. ...
The Rushani language, a Pamir language, is closely related to the Shughni language, and in fact may be classified as a dialect of it. The Pamir languages are a subgroup of the Iranian languages, spoken in the Pamir Mountains, primarily along the Panj River and its tributaries in the southern Gorno-Badakhshan region of Tajikistan around the administrative center Khorog ( ), and the neighboring Badakhshan province and is in Pamir Area Afghanistan. ... Shughni is one of the Pamir languages of the Southeastern Iranian language group. ...
References
Payne, John, "Pamir languages" in Compendium Linguarum Iranicarum, ed. Schmitt (1989), 417–444.