original_query: What is a security agreement in the law of the United States?
query: What is a security agreement in the law of the United States?
answer: In US law, a security agreement is a contract governing the relationship between parties in a secured transaction (e.g., a loan).  The borrower (grantor) pledges personal property (collateral) to the lender (grantee) as security for the loan.  The agreement details the lender's rights regarding the collateral.