Before we dig into the concept of the pledge in banking, you need to understand some other terms and conditions regarding debt/loans.
Whenever an individual or business firms require a loan/advance from any commercial banks or financial institutions or companies, then there are two kinds of loan available secured loans and unsecured loans.
In case of unsecured loans, no collateral is required, on the other hand, when it comes to secured loans collateral (security) is required to obtain such loans from any banks or financial institution.