Interest refers to the amount what your money __3__earns when it is kept in a savings instrument.
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By putting your money in some kind of savings instrument or investment, you can set aside small amount of money __2__ regularly and the money will earn interest or dividends.
Towards the end of the 18 century it dawned on scholars that perhaps all these words stemmed __10__from some common language.
A savings instru- __4__ment has an “interest rate ” associated with it