Grexit, Brexit, Eurozone, EU: What's the difference?

Two made-up words have been talked about a lot in Europe lately: Brexit and Grexit. While they may rhyme, they don't describe the same thing.

Grexit is Greece's potential exit from the eurozone, while Brexit is the United Kingdom's potential exit from the European Union. Here's the difference.

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The eurozone is the group of countries that has adopted the euro as its currency. The European Union, on the other hand, is the group of countries that formed an official union in 1993.

All but nine of the European Union countries use the euro.

So, a potential Grexit means the country would leave the eurozone behind and adopt a new currency. But it doesn't necessarily mean Greece will leave the European Union.

See photos from Greece after the bailout:

While there's precedent for European Union members having their own currency, it would be unprecedented for a member to leave the eurozone.

Which brings us back to the Brexit, or the British exit from the European Union. The U.K. has a lot of opt-outs from the EU -- including that it never adopted the euro -- so the country practically already has one foot out the door.

A proposed referendum on Britain's European Union membership was one of Prime Minister David Cameron's campaign platforms, and he won. The referendum is supposed to happen by the end of 2017.

Facing a Grexit and Brexit, the future for the 22-year-old union that started as an experiment in diplomacy is anyone's guess.

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