From a Coupon Rate Point of view, there are ....... types of debentures.

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From Coupon Rate Point of view:
(a) Specific Coupon Rate Debentures: These debentures are issued with a specified rate of interest, which is called the coupon rate. The specified rate may either be fixed or floating. The floating interest rate is usually tagged with the bank rate.
(b) Zero Coupon Rate Debentures: These debentures do not carry a specific rate of interest. In order to compensate the investors, such debentures are issued at substantial discount and the difference between the nominal value and the issue price is treated as the amount of interest related to the duration of the debentures.