debenture bond(n = noun.possession) debenture, unsecured bond - the ability of a customer to obtain goods or services before payment, based on the trust that payment will be made in the future;
is a kind of bond, bond certificate

bail bond, bearer bond, bond, bond certificate, bond issue, bond paper, bond rating, bond servant, bond service, bond trading, chemical bond, convertible bond, coordinate bond, corporate bond, coupon bond, covalent bond, dative bond, debenture, double bond, electrostatic bond, electrovalent bond, government bond, high-yield bond, hydrogen bond, ionic bond, james bond, julian bond, junk bond, letter bond, metallic bond, municipal bond, noncallable bond, peptide bond, performance bond, post-obit bond, premium bond, registered bond, revenue bond, savings bond, secured bond, surety bond, treasury bond, unsecured bond, utility bond, utility revenue bond, zero coupon bond, zero-coupon bond