I assume the average person does not care about what Rus’ means versus Russian, Belarusian, and so on? Is there a tendency to group them together? As Russians

I assume the average person does not care about what Rus’ means versus Russian, Belarusian, and so on? Is there a tendency to group them together? As Russians or as Rus’? There is a lot of cultural context that Western Europeans (inc myself) are not aware of.