Is tellers check and cashiers check the same thing?

No, a teller's check and a cashier's check are not the same thing. A cashier's check is issued by a bank and is guaranteed by the bank's own funds, making it a secure form of payment. A teller's check, on the other hand, is typically drawn on the bank's own account but may be issued at the request of a customer and may not have the same level of guarantee as a cashier's check. Both are used for secure transactions, but they differ in their issuance and guarantees.