BTU, or British thermal unit, is the industry-standard used to measure the heating efficiency of furnaces. In addition to BTU ratings, furnace manufacturers might include a Manual J Load rating and a percentage of energy efficiency.
A debenture is a type of debt instrument that is not secured by physical assets or collateral. Debentures are backed only by the general creditworthiness and reputation of the issuer. Both corporations and governments frequently issue this type of bond to secure capital.
Difference Between Debt Securities and Equity Securities. Equity securities represent a claim on the earnings and assets of a corporation, while debt securities are investments into debt instruments. For example, a stock is an equity security, while a bond is a debt security. When an investor buys a corporate bond, he is essentially loaning the corporation money, and he has the right to be repaid the principal and interest on the bond.