Jay Dyer says: "Money Is Easy, Currency Is Hard"

Money: Get money. Save money. Money, over time, preserves or grows in value (purchasing power). Convert money, if necessary, into currency, then purchase what you will.

Currency: Work CONTINUALLY for currency . Currency saved loses value the longer you save it. Put currency, that must be continually managed, to work for you, and over time you may end up with a large amount of currency that does not purchase as much as the original amount of currency did. 

Moral: Turn Currency into Money as soon as possible, then save Money until needed.