Official nameFederal Republic of NigeriaCapitalAbujaPopulation estimate (2015)182·20 millionInternet domain extension.ngCurrencyThe unit of currency is the naira (NGN), which consists of 100 kobo.TerritoryNigeria is bounded in the north by Niger, east by Chad and Cameroon, south by the Gulf of Guinea and west by Benin.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words