The most widely used currency in the world are: Gold Dollars European dollars called “Euros”
All US Bills are cloth, not paper – 25% Cotton, 75% Linen with red and blue synthetic fibers distributed throughout. The US prints 16,650,000 $1 bills each day. The $1 bill has an average lifetime of 18-22 months. Damaged bills are shredded. Recently, the Fed destroyed around $7.5B worth of currency.
Money is a form of currency. Currency is something you can use to exchange things with. The major currency of the world are Gold, Dollars and Euros. The US Dollar is “Legal Tender” means that the government requires people to accept it. Because of this you no longer have to trade but you can use money to buy what you want.