A loan that is not secured by any form of collateral.  An assignment of collateral, that would be found on mortgage loans to secure the property as collateral, does not exist with an unsecured loan.
A mortgage with periodic installments of principal and interest that do not fully amortize the loan.  The balance of the mortgage is due in a lump sum at a specified date, usually at the end of the term.
Mortgage calculators are very accommodating tools for valuing mortgage payment calculations and qualifying mortgage amounts.  A mortgage calculator is also exceedingly useful in calculating the impact of down payment changes on the loan size, the loan amount, the loan payment and ultimately the loan qualification. Most buyers do not have enough cash to buy a home