Deciding whether to choose a CD or a Money Market is mostly your preference and your own personal spending habits. As stated in the individual descriptions CD’s are not as flexible or as liquid as a Money Market account. Once you deposit your funds in the CD it’s there for the duration of the term you agreed to. Money Market accounts usually allow you to make a limited amount of withdrawals per month. The similarities are they both allow you a secure way of saving and earning more interest than a regular savings account.