A bond is a loan in which you the investor loans money to the issuer of the bond. The issuer can be a company, local authority or government. In return for lending the issuer their money the investor receives interest from the bond (much like a bank receives interest for lending you a mortgage).
A bond is set a maturity date at which the issuer pays back the initial sum of the bond. The dates can vary from
Bonds are considered a safer investment than stocks as the investor receives the same sum he/she invested back at the maturity date. This is not the case with stocks as the stock price rises and falls meaning the investor could receive a lot more or a lot less back from their initial investment, hence the increase risk.
Note: Bond prices do rise and fall as they are traded on the stock market, however the rise and fall in their price is nothing an investor needs to worry about as they are guaranteed their initial investment back.
Gilts is a word used for bonds issued by the UK, Ireland and South African governments. the government issue different types of gilts and bonds, as shown below.
The biggest risk when investing in bonds is if you invest in company bonds and the company goes bust, you will not receive back your initial investment. Also if the company you are investing in struggles they may not pay you the interest on your bond.
Government bonds (gilts) are deemed less risky as a government is expected to pay back the full amount. However the interest received by the investor is often lower due to the perception of lower risk.