investment is something that we spend and have a profit instead of the issued capital is the way people earn more income, and while the trade is a low purchase of goods that you will sell expensive to earn income, the same thing with investment but there are differences in the field . but two two will give you a good income if you continue to work hard to find a good profit. the strain is just one part of the investment that you are doing and the investment has a broader advantage over the trade.