U.S. treasury notes and bonds have maturities from two to thirty years; they are free of default risk, mortgages have maturities up to thirty years.
municipal bonds have maturities of up to thirty years; their interest is exempt from most taxes.
corporate bonds have maturities up to forty years.
municipal and corporate bonds are subject to default risk.
some preferred stocks have no maturity date, some do have a specific maturity date.
common stock has no maturity date, and is riskier than preferred stock.