Mortgage interest refers to the amount of money that the borrower pays to the lender in return for the loan. If you're shopping around for a mortgage, it's crucial to know the different synonyms for the word mortgage interest to understand what you're paying for. Several terms can serve as the same meaning as mortgage interest, such as interest rates, financing costs, loan charges, and APR (Annual Percentage Rate). The amount of the mortgage interest will depend on several factors such as the loan amount, loan term, and the borrower's credit. It's important to compare rates from different lenders before entering into a mortgage agreement to know the best options for you.