Official nameJumkhurii Tojikiston (Republic of Tajikistan)CapitalDushanbePopulation estimate (2015)8·48 millionInternet domain extension.tjCurrencyThe unit of currency is the somoni (TJS), which consists of 100 dirams.TerritoryTajikistan is bordered in the north and west by Uzbekistan and Kyrgyzstan, in the east by China and in the south by Afghanistan.LanguageThe official language is Tajik, written in Arabic script until 1930 and after 1992 (the Roman alphabet was used 1930–40; the Cyrillic, 1940–92).Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words