Official nameRepublica da Guiné-Bissau (Republic of Guinea-Bissau)CapitalBissauPopulation estimate (2015)1·84 millionInternet domain extension.gwCurrencyThe unit of currency is the franc CFA (XOF).TerritoryGuinea-Bissau is bounded by Senegal in the north, the Atlantic Ocean in the west and by Guinea in the east and south.LanguagesPortuguese remains the official language, but Crioulo is spoken throughout the country.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words