A reserve currency differs from one that payments are settled in

There has been a lot of discussions recently on the international usage of the US dollar (USD) as a currency for trade and investment payments that stems from its role as a reserve currency. The war in Ukraine has given rise to concerns about the USD's role as a currency that can be used freely for international payments, or for keeping reserves to make international payments when needed. In the context of geo-political tensions, there is speculation on whether the Chinese currency can be a better reserve currency or whether there will be a flight to gold, triggered by reports…