This document outlines the different types of issuers and instruments in the debt market. Government securities are issued by central and state governments and include treasury bills, coupon bearing bonds, zero coupon bonds, and floating rate bonds. Public sector bonds are issued by government agencies, statutory bodies, and public sector undertakings and include debentures, government guaranteed bonds, commercial papers, and PSU bonds. Private sector bonds are issued by corporates, banks, and financial institutions and include debentures, commercial papers, fixed and floating rate bonds, zero coupon bonds, inter-corporate deposits, certificates of deposits, and bonds.