Payback vs Refund - What's the difference?

As nouns the difference between payback and refund

is that payback is an act of revenge while refund is an amount of money returned.

to return (money) to (someone); to reimburse.

(wikipedia payback)

(en-noun)

(uncountable) An act of revenge.

They beat us last year, so this year's win was payback .

(countable) A form of recompense.

* '>citation

* just deserts, poetic justice

(en verb)

To return (money) to (someone); to reimburse.

A governor, that had pillaged the people, was sentenced to refund what he had wrongfully taken. — L'Estrange.

If you find this computer for sale anywhere at a lower price, we'll refund you the difference.

(obsolete) To supply again with funds.

to refund a railroad loan

(obsolete, rare) To pour back.

Were the humours of the eye tinctured with any colour, they would refund that colour upon the object. — Ray.

(en noun)

An amount of money returned.

If the camera is faulty, you can return it to the store where you bought it for a refund.