Aside from the risk differentiation,  trading and gambling have nothing to be compared to each other and in fact, both are of different classes,  but because of the risk of losing almost everything that is available in both,  we tend to make the presumption that trading and gambling are the same,  but if you give a further close look to both,  you will discover that trading has it own unique feature and it more or less an asset purchase where if you don't gain,  you still holds the asset,  but gambling is like an air where you are given balloon money which can either boost 100% or you win all.

In trading, you can't lose 100% but in gambling, all your money may be gone within a second,  most especially in games that don't offer you available cash-out.