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Slippage is the gap between the price you expected and the price your order actually filled at. It is not a fee and nobody charges it to you - it appears when your order is large relative to the resting orders available, so it eats through several price levels.
The thinner the market and the bigger the order, the wider that gap. This is why the same trade behaves differently in a deep market than in a quiet one, and why size and timing matter as much as the headline rate.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/slippage
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At any moment there is a highest price someone will pay and a lowest price someone will accept. The gap between them is the spread, and it is a real cost of trading even though nobody invoices you for it.
Buy at the ask and sell immediately at the bid and you lose the spread without the market having moved at all. Liquid pairs have spreads so narrow they are easy to ignore; quiet ones can have spreads wide enough to matter more than any fee. When a single price is quoted to you, it is a simplification of these two.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/bid-ask-spread
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An order book is every resting buy and sell order for a pair, stacked by price. Buy orders below, sell orders above, and the gap between the best of each is where the market currently sits.
Reading it changes how prices feel. What looks like a single number on a chart is really a queue of other people's intentions, and your order interacts with that queue rather than with an abstract price. Everything else in trading mechanics - spread, depth, slippage - is a description of the shape of this list.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/order-book
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A limit order specifies the worst price you will accept and waits. It will not fill beyond that price, which also means it may not fill at all.
So the trade-off is the mirror image of a market order: full control over price, no guarantee of execution. Neither type is the smarter choice in general. They answer different questions, and the honest test is which regret you would rather risk - paying more than you wanted, or watching the market leave without you.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/limit-order
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A market order takes the best prices currently available until it is filled. It trades price certainty for execution certainty: you will almost always get done, and you accept whatever the book offers.
In a deep market that is barely noticeable. In a thin one it is expensive, because your order eats through several price levels to find enough size. This is why the same market order behaves very differently on a major pair than on a quiet one, and why "the price moved against me instantly" is usually a description of thin depth rather than bad luck.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/market-order
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Placing an order does not buy anything. It submits an instruction describing what you are willing to do, and a trade happens only when someone on the other side matches it.
That distinction explains most beginner confusion. An order can sit unfilled, fill partially, or fill at a different price than the one on screen, and none of those is a malfunction. Every order type that follows is just a different way of answering two questions: at what price, and how badly do you want it to happen now.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/order
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Digital data copies perfectly, which means digital money faces one hard question: what stops the same unit being spent twice? Before blockchains, the answer was always a central party keeping the single authoritative record.
A blockchain answers it without that party. Transactions are ordered by consensus, and once one spends a unit, any later attempt to spend the same unit is rejected by everyone. This is what all the machinery is for - the blocks, the confirmations, the fees. Not complexity for its own sake, but the cost of settling that one question with nobody in charge.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/double-spending
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A widely used token often exists on several networks at once. The name is identical, the balance is quoted the same way, and the two versions are not interchangeable.
Sending one network's version to an address expecting another's is the classic way funds disappear. The transfer often succeeds - it simply lands somewhere nothing is watching. This is why every deposit screen asks for the network separately from the address, and why that dropdown deserves the same attention as the address itself. Recovery, when possible at all, is slow, manual, and never guaranteed.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/cross-chain
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On some networks each account numbers its own transactions in sequence. The network processes them in that order and will not skip one.
This produces a confusing symptom worth recognising. If an earlier transaction is stuck, everything you send afterwards waits behind it - not because those later transfers have a problem, but because they cannot be processed out of order. The fix is to resolve the blocked one rather than to keep resending. Knowing this turns "all my transfers are frozen" into "one transfer is frozen", which is a very different problem.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/nonce
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A confirmation means a block containing your transaction has been added, and each further block on top is another confirmation. More confirmations mean the record is harder to unwind.
Different services require different numbers, and the reason is risk rather than caution for its own sake. A shallow transaction can in principle be displaced if the network briefly disagrees about the latest blocks; a deeply buried one cannot. So the required number scales with what is at stake. When a platform makes you wait, it is pricing the possibility of being wrong.
Binance Academy covers this in more depth: https://www.binance.com/en/academy/glossary/confirmation
Trading crypto from Dubai since 2019.
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