secured bond: a bond that is back by collateral
bond: a certificate of debt (usually interest-bearing or discounted) that is issued by a government or corporation in order to raise money; the issuer is required to pay a fixed sum annually until maturity and then a fixed sum to repay the principal
masorah: a vast body of textual criticism of the Hebrew Scriptures including notes on features of writing and on the occurrence of certain words and on variant sources and instructions for pronunciation and other comments that were written between AD 600 and 900 by Jewish scribes in the margins or at the end of texts