I created this thread because there seems to be a common misunderstanding that says casual equals poor skills (or something not quite so demeaning). By the same token, there's another misunderstanding that hardcore means elitist or vicious. Neither is true in Guild Wars 2.
This thread is created so we can help each other understand each other. Please keep any discussion civil. For THIS thread, it really doesn't matter which group is more numerous. Just discuss what the terms mean to you, and also your perspective as to what they mean to the rest of the player base.
(I envision this thread being something we can point to whenever there's a discussion on other threads about the differences.)