While I assessed these two options, if OP is really aiming to experience trading, then let him trade but not the whole amount of 1 million Naira, but maybe 1/4 of it so that he can really assess on his own if trading will work for him. If not, then proceed to investing, that’s simple as that.
We all have different points of view about this, but for me, in order to maximize the future outcomes, then we have to seriously prepare for it. Trading is highly risky, so you have to learn proper risk management first before proceeding into trading.
Exactly, why should OP choose one when he can try both and make his own decision afterwards?
Because trading is riskier, he can even start with just $20 or $50, not necessarily 1/4 or 1/2 of the capital. After trying, if he really likes it then continue, but if he feels it is too risky and not suitable, then just invest.
We are not the same, from views to preferences, or tastes...so we should not rely on other people's advice to make choices because sometimes what is suitable for them may not be suitable for us. Experiencing it yourself to make a choice is the best way.