You use money to buy something.
Or to pay something.
Words with same meanings
There are many kinds of money.
Countries have their own money.
Such as the pound.
In the United Kingdom.
That's the currency of a country.
There is coin money.
These are coins.
And there is paper money.
These are bills.
There is also electronic money.
If you buy something with a Credit card.
Or if you buy something with Bit·coin.
The state take care of the money.
Mostly the state passes this task.
Passes it to a Central bank.