For now, stock market. Both are risky but at least we have a real thing if we invest in stock.
What is not real here ? Cryptocurrency ? The fact that the market is new does not mean it is not real. A lot of companies are gradually integrating the blockchain technology to build a product for them-selves in the crypto market and for sure, we all know that is just a start as there would be many more incidents to come in the long run.
Crypto will do great as we keep forging on, and the only thing anyone should be considering at all when comparing both is just the level of risk which in this case, taking higher risk can actually result to mouthwatering results, so it is each one's take.