A bond is a debt security in which the authorized issuer owes the holders a debt and depending on the terms of the bond is obliged to pay interest (the coupon) and/or to repay the principal at a later date, termed maturity. (It is a formal contract to repay borrowed money with an interest at a fixed intervals).When you purchase a bond; you are lending money to the issuer which may be a government,corporation, federal agency, or other entity.In return for the loan, the issuer promises to pay you a specified rate of interest during the life of the bond and to pay back the face value of the bond or the principal when it "matures," or comes due.
Corporate Bond - Corporate Bond are issued by the corporates i.e. Public or Private companies to investors. The company borrows money from investors and promise to pay interest at regular intervals. The interest rates on such bonds are high compared to government bonds as the probability of government defaulting on interest payments is low compared to a corporate. Inflation Linked Bond - In Inflation linked bonds; principal and the interest payments are indexed to inflation. The interest rate is usually lower than that of fixed rate bonds with a comparable maturity.
Convertible Bond - The holder of a convertible bond has the choice to convert the bond into equity (in the same value as of the bond) of the issuing firm (borrowing firm) on pre-specified terms. This results in an automatic redemption of the bond prior to maturity date.