What is the distinction between monetary devaluation and monetary depreciation?

"Monetary Devaluation" if in fact, the fall in value of currency relative to gold or to other currencies, which is usually country's governmental decision to overcome high inflation rate affecting exports' prices and adverse the country's "Balance of trade" as a main part of the country's "Balance of Payments". Whereas the "Monitory Depreciation", is the reduction in value of one currency in relation to other currencies.