Waiver
Voluntary relinquishment or surrender of some right or privilege.

Walk-through
A final inspection of a home to check for problems that may need to be corrected before closing.

Warehouse fee
Mortgage firms often borrow funds from a warehouse lender on a short-term basis in order to originate loans that will later be sold to investors in the secondary mortgage market. Lenders may charge a warehouse fee to cover an expense charged by the warehouse lender.