Crypto trading, or cryptocurrency trading, is simply the exchange of cryptocurrencies. Like in Forex, you can also buy and sell a cryptocurrency for another, like Bitcoin or altcoin for USD and Euro. This is one way of getting involved in the world of cryptocurrencies without having to mine it. Today cryptocurrencies have become a global phenomenon known to most people. While still somehow geeky and not understood by most people, banks, governments and many companies are aware of its importance. But beyond the noise and the press releases the overwhelming majority of people even bankers, consultants, scientists, and developers have a very limited knowledge about cryptocurrencies. They often fail to even understand the basic concepts.
In margin trading, you will borrow buying and selling power in exchange for allocation of a part of your funds (the margin) which will only be accessible again after a trade, when you return the capital you borrowed. Leverage trading, on the other hand, allows you to trade an amount that you don't have. Crypto trading services normally offer a leverage. This means that for every dollar you have, you get 10 dollars of buying power. This means bother higher risk and higher potential reward.