Wind correction angle

The angle into the wind flown so track matches the desired course.

As taught in Direction: True, Magnetic, Wind and Compass Errors (Navigation and Sectional Charts) — a free lesson with cited FAA sources.

The angle you turn into the wind to hold the intended ground track.

As taught in Wind, Groundspeed, Time and Distance (Cross-Country Flight Planning) — a free lesson with cited FAA sources.