Question

Money is what money does discuss
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Answer 1

Money is a concept which we all understand but which is difficult to define in exact terms. Money is anything serving as a medium of exchange. Most definitions of money take 'functions of money' as their starting point. 'Money is that which money does.

Answer 2

Money is what money does" is just a misnomer phrase

Money is legal tender and anything generally acceptable as medium of exchange.