IrelandIreland (ˈaɪərlənd ; Éire ˈeːɾjə; Ulster-Scots: Airlann ˈɑːrlən) is an island in the North Atlantic Ocean, in north-western Europe. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest in the world. Geopolitically, the island of Ireland is divided between the Republic of Ireland (officially named Ireland), an independent state covering five-sixths of the island, and Northern Ireland, which is part of the United Kingdom.
UlsterUlster (ˈʌlstər; Ulaidh ˈʊlɣiː, ˈʊlɣə or Cúige Uladh ˌkuːɟə ˈʊlɣə, - ˈʊlɣuː; Ulstèr or Ulster) is one of the four traditional or historic Irish provinces. It is made up of nine counties: six of these constitute Northern Ireland (a part of the United Kingdom); the remaining three are in the Republic of Ireland. It is the second-largest (after Munster) and second-most populous (after Leinster) of Ireland's four traditional provinces, with Belfast being its biggest city.
Republic of IrelandIreland (Éire ˈeːɾjə), also known as the Republic of Ireland (Poblacht na hÉireann), is a country in north-western Europe consisting of 26 of the 32 counties of the island of Ireland. The capital and largest city is Dublin, on the eastern side of the island. Around 2.1 million of the country's population of 5.15 million people reside in the Greater Dublin Area. The sovereign state shares its only land border with Northern Ireland, which is part of the United Kingdom.
United KingdomThe United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales, and Northern Ireland. It includes the island of Great Britain, the north-eastern part of the island of Ireland, and most of the smaller islands within the British Isles.