Balloon Mortgage
Generally a fixed rate mortgage with a 30 year amortization, but with a maturity date often set at 5 or 7 years.

Borrower
One who receives funds with the expressed or implied intention of repaying the loan in full.

Buydown
Money advanced by an individual (builder, seller, etc.) to reduce monthly payments for a home mortgage either during the entire term or for an initial period of years.