Some people will have an idea of what day trading is compared to gambling. Someone I had chat with about trading and all he said was that it's like betting up and downtrend game. You may consider it a very simple idea to day trading or simply making it a game of chance. Either way, both opinions are about money-making.
They're both money-making but have some difference risk. the other one is all about luck no matter what happens and the other one is all about research and proper knowledge. both have some different views by the law, cause some governments don't allow their citizens to gamble because of some risk that it would make to the community and some government has banned the trading activity and will punish someone who is caught by doing this act.