Drag is aerodynamic force component parallel to the direction of motion.
Lift is aerodynamic force component perpendicular to the direction of motion.
Direction of motion with respect to what?
1) The instantaneous local atmosphere (the air)? If the wind suddenly changes, does the displacement angle (below) change because the rocket keeps going in one direction, but the aerodynamic force changes because the air is now moving differently?
2) Earth-centered, Earth-rotating frame?
3) Earth-centered, inertial frame?
I'd like to write a few lines of code, but I was stopped cold when I realized that a (very strong) gust of wind can induce lift - depending on how the vectors are defined.