risk is the risk of a decline in a bond's value due to an increase in interest rates. This risk is higher on bonds that have long maturities than on bonds that will mature in the near future. risk is the risk that a decline in interest rates will lead to a decline in income from a bond portfolio. This risk is obviously high on callable bonds. It is also high on short-term bonds because the shorter the bond's maturity, the fewer the years before the relatively high old-coupon bonds will be replaced with new low-coupon issues. Which type of risk is more relevant to an investor depends on the investor's , which is the period of time an investor plans to hold a particular investment.

Price risk is the risk of a decline in a bond's value due to an increase in interest rates. This risk is higher on bonds that have long maturities than on bonds that will mature in the near future.
Reinvestment risk is the risk that a decline in interest rates will lead to a decline in income from a bond portfolio. This risk is obviously high on callable bonds. It is also high on short-term bonds because the shorter the bond's maturity, the fewer the years before the relatively high old-coupon bonds will be replaced with new low-coupon issues.
Which type of risk is more relevant to an investor depends on the investor's investment horizon, which is the period of time an investor plans to hold a particular investment.
Longer maturity bonds have high price risk but low reinvestment risk, while higher coupon bonds have a higher level of reinvestment risk and a lower level of price risk.