interest
fee paid by the debtor to the creditor for temporarily borrowed capital
riba
unjust, exploitative gains made in trade or business under Islamic law
accrued interest
money earned on an investment with interest
coupon
interest payment received by a bondholder from the date of issuance until the date of maturity of a bond
discount window
institutional possibility to borrow money from a central bank
Reference rate
Type of interest rate
penal interest
punitive interest given to borrowers
usury
loans with unfairly high interest rate
compound interest
when interest is added to the principal of a deposit or loan, so that, from that moment on, the interest that has been added also earns interest
simple interest
interest calculated only on the principal amount that remains, and excludes the effect of compounding