Deposit vs. Deposition

In legal English, a deposit is either (1) money placed in a bank account or (2) something given as security or part payment for a cost or debt.

“The purchaser was required to pay a deposit of 10% of the price of the property.”
The term deposit is also used as a verb.

“She deposited all of her salary into her bank account.”

The legal term deposition is the testimony of a witness, under oath that is written down or recorded for use in court at a later date.

“In many countries depositions are given in courtrooms, but in the United States they are usually taken elsewhere.”