Should have good knowledge for both investing and trading. But trading requires more intelligence and knowledge than investing ..... I prefer investing to trading.
Well, both need a piece of good knowledge about things and superior intelligence to make a handsome amount of profit. You have to work more to excel in trading because you will need to learn analytical and technical skills. On the other hand, an investor also needs to brainstorm his ideas regarding the best investment options. Investment is a bit safer option than trading, but the profit margin is also less. Trading is riskier, but when looking at the profit margin and earning potential, I think it is better to take some calculated risk.