Exchange rates

Currency purchase – the bank purchases foreign currency in cash from the client (the bank accepts physical banknotes in foreign currency from the client)
Currency sale – the bank sells foreign currency to the client in cash (the client receives physical banknotes in a foreign currency, e.g. USD)

Cash deposit in a foreign currency to an account in another foreign currency – the bank converts the deposited amount to EUR and then from EUR to the currency in which the account is kept (e.g. CZK deposit to an account in USD, for CZK the exchange rate used is purchase and for USD currency rate sale)
Withdrawal of cash in a foreign currency from an account in another foreign currency – the bank converts the withdrawn amount to EUR and then from EUR to the currency in which the account is kept (e.g. withdrawal of CZK from an account in USD, the exchange rate used for USD is purchase and for CZK currency rate sale)

Foreign currency purchase – non-cash transactions in foreign currency credited to the account/card (e.g. payment in USD credited to the client's account maintained in EUR)
Foreign exchange sales – non-cash transactions in a foreign currency debited from the account/card (e.g. card payment in USD debited from an account maintained in EUR)

Transfer of foreign currency from an account in another foreign currency – the bank converts the amount transferred to EUR and then from EUR to the currency in which the account is kept (e.g. transfer of CZK from an account in USD, for CZK the exchange rate used is sale and for USD the exchange rate is used purchase)
Received payment in foreign currency from an account in another foreign currency – the bank converts the amount received to EUR and then from EUR to the currency in which the account is kept (e.g. receipt of CZK to an account in USD, for CZK the exchange rate used is purchase and for USD exchange rate sale)