Cash

In economics, cash is money in the physical form of currency, such as banknotes and coins.

In book-keeping and financial accounting, cash is current assets comprising currency or currency equivalents that can be accessed immediately or near-immediately (as in the case of money market accounts). Cash is seen either as a reserve for payments, in case of a structural or incidental negative cash flow or as a way to avoid a downturn on financial markets. Provided by Wikipedia