Britain, Great Britain, The British Isles or the United Kingdom?
Officially, the United Kingdom is called: The United Kingdom of Great Britain and Northern Ireland. The United Kingdom (the U.K.) is made up of four nations: England, Scotland, Wales and Northern Ireland. When speaking about Great Britain or Britain, we only talk about three countries: England, Scotland and Wales. Ireland, or the Republic of Ireland, is not part of the U.K.
But when do you speak of The British Isles? It is the geographical name for the group of islands that includes the biggest island: Great Britain, the Island of Ireland and lots of smaller islands around the different coasts. Look at the map below to learn about the biggest smaller islands or island groups.