Airplane propeller has blade angle almost perpendicular to the rotor axis. It normally ranged 0-15 degree. 0 degree will not produce any thrust. More than 15 degree will produce more drag, compare to the trust.
Wind propeller has blade angle almost parallel to the axis. 0 degree mean the blades adjusted exactly parallel to the rotation axis. 15 degree mean, has 15 degree "discrepancy" from the axis.
Angle of Attack (AoA) of propeller and wind turbines are seen from different perspective. AoA of a propeller is seen from the axis itself parallel to the blade. It is just how the bolt corrugation. Meanwhile the AoA of wind turbine blades is seen from the frontal site, parallel to the axis.
This two kinds of bold. The single one is reflecting the AoA of propeller. The corrugation almost perpendicular to the bolt (axis) itself. While the smaller bold in the second picture, showing longer pitch. The longer the pitch until almost parallel to bolt (axis) itself, the more suitable to the wind turbine blade.