The answer to this question is much more obvious when you have a proper understanding of the financial terms “money” and “capital”. Money is a more liquid asset, which can be thought of as cash flow. Money is used to purchase equipment, buy supplies, etc. So, it makes sense that you want money on hand—or at least quick access to it.
Capital, on the other hand, is financial power. This is deep wealth that is stored or invested, such as what is put into a business to start it up, and then not accessed until much later. The capital market is defined by higher volume and more longevity.
So, the answer is clear—the money market is one of financial liquidity, where funds are stored away for a short period of time. Think of a Money Market account at a bank. This is a savings account, but it is easily linked to a checking account, so that if you want to access it you can pull it out quickly. The capital market deals with stocks and bonds, long-term investments meant to sit and build wealth over time. They will be withdrawn when absolutely necessary for large scale purchases or transactions.