The different order statuses are new, partially filled, filled, canceled or rejected.
This is for any active order that has not reached the desired market price that you have set.
This means that your order has not been fully executed and the remaining amount is still pending execution.
This means that your order has been fully executed.
A canceled order status, means this order is no longer active. Canceled orders get pruned after a few hours, so you may not see previously canceled orders in your order history.
If your order was rejected, your order was never placed. Rejected orders get pruned after a few hours, so you may not see previously rejected orders in your order history.