уверенность; гарантия; залог; поручитель; гарант; поручительство(A surety or guarantee, in finance, is a promise by one party (the guarantor) to assume responsibility for the debt obligation of a borrower if that borrower defaults. The person or company that provides this promise, is also known as a surety or guarantor. wiki Alexander Demidov); порука(Alexander Demidov); гарантийное письмо(a person who accepts legal responsibility for another person's debt or behaviour: act as surety for sb/something "He acted as surety for the two companies when they took out the original loan. a promise, or money or property given as a promise, that someone will do something that they have said they will do, such as pay a debt or appear in court: "Analysts doubt whether Ford would have been able to raise such a large amount of debt without some kind of surety. "A local shopkeeper and a relative had been prepared to put up a surety of $20,000, the court heard. CBED Alexander Demidov); верность; порука; заложник
обеспечение(surety, surety bond or guaranty, in finance, is a promise by one party to assume responsibility for the debt obligation of a borrower if that borrower defaults. The person or company that provides this promise, is also known as a surety or guarantor. wiki Alexander Demidov)