Cách sử dụng
The word 'coin' is a noun that refers to a small, flat, round piece of metal or plastic with special markings on it that is used as money. It is commonly used to refer to physical money, especially smaller denominations like pennies, nickels, dimes, and quarters. You can use the word 'coin' in everyday conversation when talking about buying something or receiving change at a store. For example, "I need to get some coins for the vending machine" or "Can you give me some coins for these bills?"