How can I properly describe this?

They're just a different kind of person. Like Canadians and French people.

They go "Yeah. But they both speak French, and are people. NO, NOT REALLY.

That's the point, though. OCs are just people. Who happen to be from a different place.

They declared me insane, and insisted on changing the subject.

You can convert them some other time, then.

if you are going with the language thing, I am going to get scolded for bringing this up, but the United States and England.

they are both English, and it is clear that they are the same language but at the same time they are so different