Yes, that's just it. One conference contains all the western teams and the other all the eastern teams. The big reason it's split up like that is to cut down on travel expenses. North America is much larger than Europe, geographically, and if you were to have Montreal playing LA every couple weeks, that'd get expensive after a while. That, and there's 30 teams in the league, so you've got to cut it somewhere.

As for the AFC and NFC, that's NFL football. Don't ask me about it. I'm Canadian. We have our own football league....with 8 teams