A remittance slip is a receipt obtained when a remittance unit entrusts a bank to remit money to a foreign payee, and it is a proof of remittance settlement. A money order is a form that a bank needs to fill in when it needs to send money to someone (remittance is to send money to someone and deposit it in his account). A draft is just a form that needs to be filled in when cash is deposited into a bank account.