There are 180 official currencies used around the world. A currency is a form of money or means of exchange, which includes paper bills, coins, and polymer banknotes made from materials like cotton. The document then lists many currencies from countries around the world in alphabetical order from Afghan Afghani to Zimbabwean Dollar, including less common currencies like the Bhutanese Ngultrum and Djiboutian Franc. It notes some countries like Canada and Ecuador use the US Dollar and many European nations use the Euro.