Cash is legal tender—currency or coins—that can be used to exchange goods, debt, or services.
Sometimes it also includes the value of assets that can be easily converted into cash immediately, as reported by a company.
Cash in its physical form is the simplest, most broadly accepted and reliable form of payment,
which is why many businesses only accept cash.
Checks can bounce and credit cards can be declined, but cash in hand requires no extra processing.
However, it's become less common for people to carry cash with them, due to the increasing dependability and convenience of electronic banking and payment systems.