Liquidity, order books and slippage: key words

How easily you can buy or sell something quickly, without moving its price much. Source

How big a trade a market can absorb without the price moving; often measured by the orders waiting at the best prices. Source

The gap between the highest price a buyer will pay (the bid) and the lowest price a seller will accept (the ask). Source

The price halfway between the best bid and the best ask. A useful reference, but on an order book every trade matches a bid or an ask. Source

An exchange's list of the buy orders (bids) and sell orders (asks) waiting to be matched. Source

An order to buy or sell straight away at the best price available. It almost always fills, but the price is not guaranteed. Source

An order to buy or sell only at a set price or better. It protects the price, but may not fill. Source

An order that turns into a market order once the price reaches a set stop price. Source

A trader whose order matches straight away against orders already on the book, removing liquidity. Source

What an order paid or received in total, divided by the number of tokens, when it fills at several prices. Source

The gap between the price you were quoted and the price your trade actually got. Source

The most the price may move against you before a DEX swap is cancelled instead of filled. Source

How far your own trade moves the price, because it uses up the liquidity available. Source

Maximal extractable value: profit taken by including, leaving out or reordering transactions in a block. Source

Trading just before and just after someone's large swap, to profit from the price move their swap causes. Source

An order that splits a large trade into smaller pieces traded at set intervals, to reduce price impact. Source