Order Book Friction

These terms cover the best prices, the gap between them, and the drag from moving size.

How to recognize this theme

Terms that describe the quote ladder traders watch before execution.

In a daily board, this category groups terms by their shared role. Look for four cards that describe the same mechanism, risk area, or workflow rather than four words that merely sound similar.

Educational context

These entries are vocabulary notes for learning. They are not project endorsements, token recommendations, exchange rankings, or trading signals.

Bid

A bid is the highest price a buyer is currently willing to pay in the market.

Ask

An ask is the lowest price a seller is currently willing to accept in the market.

Spread

The spread is the difference between the best bid and the best ask.

Slippage

Slippage is the difference between the expected price and the price a trade actually gets.