Interest to encourage saving money. Usually higher interest than checking acct, but lower than CDs. Can deposit & withdraw, but not usually write checks or use Debit card.
Allow for basics like checks and debit cards. Not much else, like interest. Limit certain behaviors.
Provide interest, but cost more than basic checking. Usually have a minimum balance and have fewer restrictions.
Money Market Deposit (MMDA)
Higher minimum balance. Restrictions on what you can do. Invest your money in short term debt
Certificate of Deposit
Required to leave money for set amount of time. Higher interest rates for longer periods. Safe investment. Penalized for early withdrawal.