esun

esun deals with exchange. This includes commerce. A tomo esun is a place for exchange, like a store.

mi esun e moku lon open suno.

I bought food at the start of the day.

Exchange is not limited to interpersonal trading. When breathing, a person esun e kon around them for oxygen.

Some speakers use tenpo esun to refer to weeks, as the cycle of commerce revolves around weekdays and weekends.