I assume "region" has a similar meaning as "area", "state" or "county, but is it commonly used in reality as well?
Native speaker’s answer
Rebecca
You're right about the meaning of "region"! From what you've mentioned, the closest word to it is "area". And yes, it is commonly used in reality too! Ex: There was a lot of flooding in the northern region. Ex: I've never been to that region before.