Sheer?
W/O looking at a dictionary, I'm going to guess that Sheer means semi-transparent. Shear, on the other hand means Cut, or Sever. As in scissors being "shears". There's spelling, and there's ignorance. Mis-spelling "Windshear" is a suggestion to consider the qualifications of the person posting. Then there is a "MICROBURT". Is that a small friend of Ernie?
This is beyond a Pedantic; minimums apply to writing as well as Flying, IMHO.("Turbulance"- a Piper in Moderate? "Thier"? no idea) Specialy?
Airfoil