Subcommunity/Subforum possible (NOT as part of groups)?

Hello,

A previous platform provider we used allowed for “sub communities” or sub forums to be created in additional languages. Example: User would click a drop down and select that they want the Japanese community. 

Google research and back end poking around doesn’t really definitively answer this for me. To be clear, I am not looking to create a sub forum within groups or categories, but a separate community altogether in another language that mirrors the English community. 

Any intel would be appreciated. Thanks!