AER stands for Annual Equivalent Rate. It is the interest rate for savings accounts, showing how much you would earn over a year with compound interest, assuming you don’t make withdrawals.

APR stands for Annual Percentage Rate. It shows the total cost of borrowing money over a year, including interest and certain fees. You’ll see it used for things like loans, credit cards, and mortgages. APR helps you compare the overall cost of different borrowing options. 

Extra money added to your income, e.g. bonuses or overtime pay.