UK vs. Great Britain

Key Differences
UK and Great Britain Definitions
Uk
What is UK?
United Kingdom (UK) is a sovereign state in Europe. Lying off the northwestern coast of the European mainland, the country includes the island of Great Britain and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another state – the Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-southwest. The Irish Sea lies between Great Britain and Ireland.
What is Great Britain?
Great Britain also known as Britain, is an island in the North Atlantic off the north-west coast of continental Europe. The area of Great Britain is 80,823 square mile. It is the largest island in Europe and the ninth largest in the world. It is part of the British Isles archipelago along with over 1,000 smaller surrounding islands, including the island of Ireland to its west. The island of part of the UK of Great Britain and Northern Ireland, constituting most of its territory: most of England, Scotland, and wales are on the island, with their respective cities, London, Edinburgh, and Cardiff.