Hypothecations are financial agreements where borrowers pledge their assets or property as collateral in exchange for a loan. There are several synonyms for hypothecation, including pledging, securing, mortgaging, collateralizing, and placing a lien on. These terms signify a similar concept of providing security to a lender against the possibility of default by the borrower. In a hypothecation agreement, the lender holds the right to seize the pledged assets or property in case of non-payment of the loan. Other closely related terms to hypothecation or security agreements include encumbrances, liens, and charges. It is essential to have a clear understanding of such financial agreements before entering into them.