Refund vs Dept - What's the difference?

As a verb refund

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

is an amount of money returned.

dept ().

(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.