On our exchange we support 3 types of orders. Please find details of them below:

MARKET – market order immediately buys or sells at the best average market price.
Use this order when rapid execution is more important for you than the price at which order executes.

STOP – stop order is used to execute a market sell when the price drops to your predefined price or used to trigger a market buy if the price rises to your predefined price.
You can use that type of order as a stop loss order if the market is moving against an open position.

LIMIT – limit order lets you decide what price you want to buy or sell at. Limit order is being added to the order book and is executed when someone submits a matching order
Use that type of order when price at which order executes is more important for you than rapid execution.