Transferable instruments creating or acknowledging indebtedness. They include debentures, bonds, certificates of deposit, notes and commercial paper. The holder of a debt security is typically entitled to the payment of principal and interest, together with other contractual rights under the terms of the issue, such as the right to receive certain information. Debt securities are generally issued for a fixed term and redeemable by the issuer at the end of that term. Debt securities can be secured or unsecured. They include commercial paper, certificates of deposit, bonds and medium-term notes.