On ground you are in ground mode direct law. Side stick commands aileron and roll Spoiler surface deflexion in ground mode. In flight mode it commands rate of roll. In Direct law yaw is mechanical. You do not have any automatic yaw compensations. you need to apply the rudder in a turn. In approach at 50ft you get in flare mode. It is a flight mode with at difference, it is only direct stick to elevator relationship but not direct law. Sometimes referred as flare law. Side stick still commands rate of roll.