Translation of redefine in German

Arete means earring. Is it only in Mexico, regional? earring has multiple translations in Spanish, some are regionalism, others not. Arete, pendiente, caravana, and some others. But they are widely understood.
My correction were added and highlighted with yellow markers and attached to this email. Tell me now if you have any questions about grammar rules, since I was a teacher 10 years ago.
When I flew to Korea, I was very nervous because this was the first time I had visited a country outside the European Union. Asia is far away for us and is culturally very different.