- Maker
- You placed an order that waited on the book and someone else traded against it. You added liquidity, so you pay the lower fee, from 0.10%.
- Taker
- Your order matched instantly against depth already there. You removed liquidity, so you pay the higher fee, from 0.20%, plus the spread you crossed.
- Spread
- The gap between the best buy price and the best sell price. It is the cost of changing your mind immediately, and it widens when a market is quiet or stressed.
- Slippage
- The difference between the price you expected and the price you got. It grows with order size and shrinks with market depth, which is why volume matters more than it looks.
- Gas
- The network fee paid to have a transaction included in a block, most often discussed on Ethereum. It is set by network demand, not by the exchange, and it rises when the chain is busy.
- Cold storage
- Private keys kept on hardware that has never touched the internet. Slower to access on purpose, and the reason a remote attacker cannot reach most customer assets.
- KYC
- Know Your Customer: the identity checks a regulated platform must complete before it can hold your money. It is also what makes account recovery possible.
- Limit order
- An instruction to trade only at your price or better. It might never fill, which is the price you pay for not paying the spread.
- Market cap
- Circulating supply multiplied by price. Useful for comparing relative size, misleading as a measure of how much money could actually exit at that price.
- APY
- Annual percentage yield, including the effect of compounding. On crypto products it is almost always variable and backward-looking, so treat a quoted figure as a recent observation rather than a promise.