A loan agreement is one of the most common contracts in civil circulation.
Under a loan agreement, the lender transfers money or other fungible items into the ownership of the borrower, and the borrower undertakes the obligation to return items of the same kind, quality, and quantity.
The subject matter of a loan agreement is money or other items defined by generic characteristics, whose features may include: size, weight, volume, etc. In practice, monetary loan relationships are the most widespread.
The borrower is not obliged to return the specific banknotes and coins to the lender. The borrower must return the same amount of money to the lender, meaning that the amount loaned refers to its quantity, not to specific monetary units.