▶Mortgages are debt instruments collateralized by collateral of certain real estate and borrowers are obliged to repay at a predetermined payment amount. Mortgages are used by individuals and businesses to purchase large real estate without paying full value before purchase. For years, borrowers repay their interests in addition to loans until they eventually own the property freely and clearly. Mortgages are also known as "mortgages for real estate" or "real estate claims." If the borrower stops paying the mortgage, the bank may be foreclosed. Mortgages come out in various forms. In fixed interest mortgages, borrowers pay the same interest rate throughout the life of the loan. Her monthly principal and interest payments will not change from the first mortgage payment to the final payment. Most fixed-rate mortgages have a period of 15 or 30 years. If the market interest rate rises, the borrower's payment will not change. If the market interest rate falls sharply, the borrower can secure that low interest rate by refinancing the mortgage loan. Fixed rate mortgages are also called "traditional" mortgages.