Interest rates refer to the amount a lender charges a borrower in return for the privilege of borrowing money. This figure is generally expressed as a percentage of the principal. For example, if the interest rate on a $1,000 loan is 5 percent per year, and you want to pay off the loan in full at the end of a year, you would pay $1050: the $1000 you borrowed, plus $50 in interest. When you put money in a deposit account, you’re essentially “loaning” money to the bank, so the bank pays you interest.

Loans refer to when one party gives money to another on the condition that it be paid back, typically with interest, at a certain time in the future. The terms of the loan determine what that interest rate will be, how long the borrower has to repay the money, and sometimes place additional stipulations on the funds including how the proceeds are used.

A 401(k) is a retirement savings account offered by for-profit employers to help their employees save for retirement. A 401(k) offers tax breaks for diligently saving for retirement, according to the Internal Revenue Service, but isn’t the easiest account to withdraw from if you need money before you retire. Using a 401(k) for your retirement savings increases the growth of your nest egg because no matter what type of 401(k) you use, the money grows without being taxed.

A line of credit is an amount of money that a lender offers to let you use when you need it, and that you will pay back over time with interest. But, you’ll only pay interest on the amount of the line of credit you use.

The periodic interest rate means the interest rate over a specific period of time. The period rate helps you figure out how much interest accrues when interest compounds on a loan more than once per year. It also helps you figure out the interest when you take out a loan for less than a year, such as carrying a balance on your credit card.

A rollover IRA refers to an individual retirement account that is set up to accept a transfer of money from an existing retirement account, such as a 401(k) or 403(b) plan. Sometimes, employer plans don’t allow you to leave the money in the account after you’ve left the company, so a rollover gives you an option if you don’t want to take an outright distribution.

A Roth individual retirement account is a special type of IRA that offers after-tax savings, rather than pretax savings like a traditional IRA. Because you forgo the tax break for contributions that you would receive from a contribution to a traditional IRA, Roth IRAs are especially attractive to people who are paying a lower income tax rate today than they anticipate paying when they take the money out at retirement, according to CNN Money.

A short refinance is when your mortgage lender agrees to accept less money than you currently owe on your mortgage. This type of refinance can be done through your current lender or a completely different lender; the refinance pays off your current lender.

A short sale of a home is when a home sells for less than the amount needed to pay off the mortgage. In a short sale, the lender agrees to accept the lower sales price as payment in full for the remaining mortgage balance. For example, if someone owes $150,000 on mortgage and is falling behind on payments, the bank might agree to take $135,000 as payment for the mortgage.