Trading seems like you do your business in immediate time with a tight budget. Investing is opposite you have to wisely make your decision because the money that you spend is much higher.
Trading is for people with tight budget? Where did that come from? How can you say that because in my opinion, you did not even experienced real trading to earn money. Trading is when you sell and buy digital currencies, for example, in the right time. Investing can be also done by people who are in a tight budget, not all investing needs a lot of money, investing can also mean keep on holding top earn profit.