Although in terms of gambling I don't think there is any much difference between greedy and addict because they are both together but however if I must distinguish between the both I think addict is the most terrible thing to become because it clouds your judgment to actually know when you are gambling or loosing too much because all your focus or believe will be that you are going to win the bet or become successful while gambling.

Meanwhile greediness on the other hand could sometimes not be only applicable on gambling addict but could be utilize by normal gamblers who just want to use one stone to kill two birds, so it normally happens when must gamblers sees an opportunity they feel they can easily win the bet so they tend to put in everything they have at that moment so that if the bet is successful they become rich and at the send they lose there money but however the little difference between greediness and addict is that greediness is controllable while addict is not controllable which makes it more terrible than greediness.