collateral

As noun: property or assets pledged as security for a loan, which the lender can seize if the borrower defaults. As adjective: accompanying but secondary; additional but subordinate.

• collateralize/kəˈlætərəlaɪz/(v)以...为抵押

• collateral damage
• put up collateral
• collateral for a loan
• collateral requirement
• collateral value

1. 1.Your house serves as collateral for your mortgage — if you stop paying, the bank can foreclose and sell the property to recover its money. (loan security)
2. 2.The military euphemism "collateral damage" — civilian casualties treated as an incidental side effect of targeting combatants — is one of the most notorious examples of sanitising language. (secondary/accompanying harm)

• security/sɪˈkjʊərɪti/— something pledged as guarantee
• guarantee/ˌɡærənˈtiː/— assurance of fulfilment
• pledge/plɛdʒ/— something given as security

from Latin "collateralis" — "col-" (together) + "lateralis" (of the side) — something alongside, on the side