Cash is simply one form of contribution, with unique properties.
First, we can easily create an accounting value. However, with a virtual enterprise, we'll probably see that such an accounting value won't give us much help in managing it. Second, we can create a ready trading market for anything denominated in currency units. Third, we can use the market characteristics to help value not only cash contributions, but all the other contributions of value as well. To learn the rules of making specific cash contributions in return for Certificates of Contribution, read our rules.