Deposit (noun)

1. An amount of money placed in a bank account.
2. A payment made as a guarantee for the performance of a contract or rental.
3. A natural accumulation of material, especially sediment, minerals or rock.
4. The act of putting something in a place for safekeeping.
5. The act of placing a bet or wager.

Origin:

From the latin word 'depositum' meaning 'something placed in trust'.

Examples:

1. She made a deposit of $500 into her savings account.
2. The rental car company required a deposit of $200 as a guarantee for the vehicle.
3. The oil deposit was discovered deep below the surface of the earth.
4. He made a deposit of his valuables at the hotel's front desk for safekeeping.
5. He made a large deposit at the casino, hoping to win big.