You can find a repayment method called "Amortization", in which the amount you borrow is repaid gradually though regular monthly payments of principal and interest. During the first few years, most of each payment is applied toward the interest owed. During the final years of the loan, payment amounts are applied almost exclusively to the remaining principal.

Wraparound mortgage results when an existing assumable loan is combined with a new loan, resulting in an interest rate somewhere between the old rate and the current market rate. The payments are made to a second lender or the previous homeowner, who then forwards the payments to the first lender after taking the additional amount off the top.