Order book is a section of Advanced trading page, where you can see a list of active buy and sell orders of a particular currency pair. 

Order Book is automated and updated in real time. It matches buy and sell orders when their criteria (price and amount) are met. It helps to see demand and supply of the selected trading pair.

• BID part represents amounts with different prices that buyers are willing to pay for the asset.
• ASK part represents amounts with different prices that sellers are willing to accept for the asset.

In Recent trades, you can see the list of all the recent Buy and Sell orders of a particular currency pair:

If you have any questions, do not hesitate to contact our Support team.