Official nameIslami Jamhuriya e Pakistan (Islamic Republic of Pakistan)CapitalIslamabadPopulation estimate (2015)188·93 millionInternet domain extension.pkCurrencyThe unit of currency is the Pakistan rupee (PKR), which consists of 100 paisas.TerritoryPakistan is bounded in the west by Iran, north-west by Afghanistan, north by China, east by India and south by the Arabian Sea.LanguagesThe official language is English. Urdu is the national language and the lingua franca, although only spoken as a first language by about 8% of the population. Around 48% of the population speak Punjabi.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words