Final answer:
Commodity money, such as gold and salt, has intrinsic value beyond its use as a medium of exchange, making it different from fiat money, which has value only as money.
Step-by-step explanation:
The only form of money that has actual, underlying, intrinsic value in itself, in addition to its use as a medium of exchange, is known as commodity money. Examples of commodity money include items like gold and salt, which have been historically used as money due to their other valuable uses.
Gold, for instance, has been used for its qualities in electronics, manufacturing reflective glass, and jewelry, hence presenting intrinsic value aside from being a medium of exchange.
In contrast, fiat money like paper currency gets its value entirely from its status as a government-declared legal tender and has no intrinsic value beyond its use as money.