Here are some more fun facts about coins in the U.S. and Japan.
Children and adults often have fun playing "heads or tails" on their palm and it is a fun game.
Japanese people do not have nicknames for all coins, but the 5 yen coin is a lucky one. People often put a 5 yen coin inside of a wallet when they gift it to someone.
The 5 yen coin is like a lucky charm, and it can bring a lot of money into the new wallet.