Folding money is a term used to refer to paper currency, which is the most common form of money used in many countries. The four-letter solution for FOLDING MONEY is NOTE, which is another word for paper currency. ONES is the four-letter solution for the term denoting the lowest denomination of paper currency, such as one dollar bills. TENS is the four-letter solution for the term denoting the next highest denomination of paper currency, such as TEN dollar bills. CASH is the four-letter solution for the term referring to money in the form of coins or paper currency. BILLS is the five-letter solution for the term referring to paper currency. TEN is the three-letter solution for the term denoting the value of a TEN dollar BILL. Finally, BILL is the four-letter solution for the term referring to a single piece of paper currency.