Money is anything that is used by an economy to purchase goods and services. The fact that currency is issued by the government does not necessarily make it money.
For example, the 100 dollar bill is issued by the US government, but how many people in the united states actually pay for things with $100 cash? Answer: not that many. So the bill is currency, but it is hinging on the edge of not being a form of money.
Here are some interesting forms of money from all around the world:
1. miniaturized tools
2. miniaturized swords
3. cowry shells
4. slabs of salt
5. beaded belts (wampum)
6. giant stone wheels
7. tobacco
8. electronic transactions
As illustrated in the list above, things such as tobacco and cowry shells (which are not issued specifically as a form of government currency) are used as money in some places. They are simply used to purchase goods and services.

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