The name "Kombucha" is likely a result of the drink's history, as it is believed to have been introduced to Japan from China and then spread to other parts of the world. The combination of "Kombu" and "Cha" reflects the drink's origins and the fact that it is made with tea.
It's important to note that the exact origin of the name "Kombucha" is not definitively known, and there are several theories about its etymology. However, the connection to seaweed and tea is a common thread in most explanations.