2. Certificates Of Deposits
Certificate of Deposits (CD) are closely related to the savings accounts but have higher interests. The FDIC also insures Cds. That means they are practically risk-free.
Their advantage is that they are usually very liquid.
6. Money Market Funds
Money market funds are a kind of mutual fund investing in short-term debt instruments, cash, and cash equivalents. Money market funds or money market mutual funds offer a low level of risk with pay-out in the form of dividends.
Annuities are simply insurance contracts. You pay a certain amount of money today, and you get a stream of income in the future. That is why annuities are best suited for retirees looking for a guaranteed income for life.