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benchmark
An unmanaged group of securities whose overall performance is used as a standard to measure investment performance.

Beta
A measure of the magnitude of a portfolio's past share-price fluctuations in relation to the ups and downs of the overall market (or appropriate market index). The market (or index) is assigned a beta of 1.00, so a portfolio with a beta of 1.20 would have seen its share price rise or fall by 12% when the overall market rose or fell by 10%.

Bond
A debt security (IOU) issued by a corporation, government, or government agency in exchange for the money the bondholder lends it. In most instances, the issuer agrees to pay back the loan by a specific date and make regular interest payments until that date.