The difference between chaos and pandemonium?

I have, for whatever reason, given the difference between chaos and pandemonium a considerable amount of thought. I came to my own conclusion by studying and understanding the definitions of the two. Pandemonium is wild disorder or noise. Chaos is extreme confusion or disorder. While both would seem to be the same, a noun meaning disorder, to me there is a difference between the two. Pandemonium is limited to a single event, such as fans rushing the fence at a football/soccer game causing it to collapse or a riot breaking out in the street or a mosh pit forming inside the crowd of a rock concert. Chaos however is unlimited and is infinite, happening at all places everywhere at all times. While this may or may not be true, this to me is the way I understand it.