What is the difference between a euro and an American dollar?

Answer 1

The euro is the currency of the European Union. It's divided into 100 cents just like an American dollar. The coins and bills are very different, however - different colors, shapes, and denominations. Still, it shouldn't take very long to get used to the coins or bills because the differences are very obvious.

The only thing that's hard to deal with is how much the euro is worth compared to the dollar, about $1.45 at this writing.

Go to wikipedia or search for "euro currency" in Google for lots of pictures and other information.

Answer 2

These are quite different things. The euro is the currency of European Monetary Union. Euro dollar refers to bonds that are issued by companies in US dollars outside the US. So a global company wants to raise money from non-US investors and issues a bond traded in, say, Europe. The interest and principal on the bond are paid in dollars. The name "Eurodollar" is because this market was historically concentrated in Europe, but it is now global.