They are both called mixed use, but are very different in terms of implementation.

In Japan, you can start and run your own business in your your own house (like your garage), within certain limits. This is why there are businesses in Japan like tiny cafes and shops that are nonviable anywhere else.

Where you and I live, the commercial section is a completely separate unit which is usually quite large, must be rented separately, and comes with a lot of regulations.