Translation of zappeln

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.
In plural there is no difference between the formal and the colloquial address form. Do you mean that you are using 3rd person singular form for the plural imperative? If so, I will change all entries so far.
My Spanish is weak, and I need to improve it here. But it is very difficult because I have many other things to do. I must take care of my family and my friends and have no time for Spanish.