What are the differences between a hardcore and a casual gamer?

[Ail]

bdbdbd said:
@Ail: The survey didn't say a word about hardcore, so that doesn't have anything to do with this topic. I find some of their categories strange, since there weren't "avid console gamer" and "console online gamer", when PC had the equivalents.

 

 I figured the extreme categorie was hardcore as they are usuallyt used in the same context.