Upper body facing downhill- The upper body is the pelvis and above. The lower body is the legs below the pelvis. While your lower body will be following the direction of the turn, your upper body will be facing mainly downhill.
Equal ankle flexion- Both ankles are at the same level of flexion throughout the turn.
Turn connection/transition- The moment in time when the turn is not a left or right turn. Skis are basically flat against the snow. Sometimes called transition.
Inclination- At the start of the turn when the body is moving forward and into the new turn and has not yet formed any angles.
Angulation- The body is no longer straight but forming angles with the goal of tipping the skis up on edge.
Long leg / Short leg- As the turn develops, the outside leg extends and the inside leg and hip flex.
Pressure in the Fall-line- The 'fall-line' is the line straight down the hill. If you were to roll a ball down the hill, it would roll down the 'fall-line'. Pressure and force against the ski should be greatest when skis are pointed down the hill.
Edge angle- As the ski tips up iterates an angle, the highest edge angle will be in the 'fall-line".
Balance against the outside ski- Stability that enables the skier to adjust edge and pressure along the length of the ski as needed.