system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: The difference between Great Britain, United Kingdom and England?
gpt
I hate when people downvote ELI5 questions, but looky here:

There are two large islands in the North Sea (part of the Atlantic). One of these is Ireland (the island) and the other is Great Britain. **Great Britain is an island.**

On Great Britain, three out of four non-autonomous countries of the UK  exist-- England, Scotland, and Wales. If you're from the USA, you can think of these as states. **England is a non-independent country on Great Britain.**

The UK is comprised of four non-independent countries. These are England, Scotland, Wales, and Northern Ireland. The first three are on Great Britain. Northern Ireland is on Ireland (the island), and the rest of Ireland (the island) goes to the Republic of Ireland, an independent country. **The UK is made from Great Britain and a small piece of Ireland (the island) called Northern Ireland.**