well, the very big difference i know from gamblers and traders is, gamblers purely expect luck in doing that, while traders are based on analysis, research and also other things to get it. Moreover, in the world of traders you are not risking your money 100%, even when the price drops, you still have the same amount of assets. whereas in gambling, when you lose, you lose everything.
Trading is a game of knowledge and skill, while gambling is purely a game of luck and chance. Gambling creates faster profits but more often ends up in a loss, while trading is mostly observed on making slower profits but more sustainable. However, both share a common thing, that is having its own risk. But at the end of the day, trading becomes more profitable if you have the skill and good strategies being used, while gambling since you have the less control to make profits, so mostly gamblers end up losing than making additional profits.