Role Of Money Market

im left confused about this issue, because we (consumers) to make the market .. and vice versa, please help and Thanks

In economics, we say that money plays three roles:

- Medium of exchange - you accept money in exchange for your time and effort into your work, and shops accept money in exchange for what you buy

- Book value. You can work now, but save money for retirement

- Measuring value: the value of your home, you dollar.

You do not know about the role of money in sociology. Ask that, in their section.