A guaranteed bond is a type of debt instrument that provides investors with the assurance that the principal amount invested will be paid back in full, regardless of the issuer's ability to repay. Some synonyms for guaranteed bond may include secured bonds, covenant bonds, or insured bonds. Secured bonds may refer to bonds backed by specific assets owned by the issuer, such as property or equipment. Covenant bonds may refer to bonds that have specific contractual agreements made between the issuer and the bondholder that must be fulfilled in order for repayment to occur. Insured bonds may refer to bonds that have been insured by a third-party insurer, providing an added layer of protection for the principal investment.