Difference between scene kids and emo kids?

There is a recurring conversation at school, at home and here on the net over the differences between these various people. How can you tell the difference between the two? I have some friends that consider themselves scene kids. They are really nice people. The idea of being "scene" is usually knowing a lot about the local bands/music scene. "Emo" is as always "Emotional" were as scene kids, I believe is more of the style and looking like an emo without the personality of it all. People who only follow the fashion and style, while emo kids follow the fashion, the style and the lifestyle.