Your question is too vague to give a specific answer.
coins used to be a form of trade. silver coins had higher denomination than larger copper coins. Paper was worth next to nothing. The paper money money was not popular because the paper money just meant that you can redeem this paper for silver. So at that time there was no point to the paper money
Egypt uses both paper currency as well as metal coins as money.
coins
Russia uses both paper and coins.
The word for currency that encompasses both coins and paper money is "cash."
Coins and paper bills used as money are called currency.
They used coins and paper money.
Coins and paper
Trees
Bacteria can be found on both coins and paper money, but studies have shown that coins tend to harbor more bacteria than paper money. Coins are often handled more frequently and come into contact with a greater variety of surfaces, which can contribute to higher bacterial contamination.
No.
money that can not convertible into the Gold and Silver like paper and coins money issued by Government.