Windsock and Wind sleeve

Windsock noun - A truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind.

Wind sleeve is a synonym for windsock in wind measuring device topic. In some cases you can use "Wind sleeve" instead a noun "Windsock".

Wind sleeve noun - A truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind.

Windsock is a synonym for wind sleeve in wind indication device topic. You can use "Windsock" instead a noun phrase "Wind sleeve".