The price at which a currency is exchanged for the other currency refers to it.

Lowering the value of the national currency by the decision of the Central Bank is called devaluation.

Raising the value of the national currency by the decision of the Central Bank is referred to revaluation.

They are the accounts that give rise to the inflow of the international payments to the country.

International transactions are recorded into the balance of payments by the double-entry bookkeeping principle.