In article .com,
wrote:

Hello,

I'm sure I should know the difference between all of these... but it
kinda starts to blur together. I'm sure there are others on here who'd
like a refresher. Anyone out there want to explain the differences to
us?

-dr

Track is the motion you are making over the ground. It is what a GPS shows.

Bearing is the direction from you to someplace else. It can be absolute
(bearing 270 degrees) or relative (9 O'Clock).

I would say that Course and Track mean the same thing. They both refer to
your motion over the ground.

Heading is what direction the nose of the plane is pointing. It's what you
read off your compass or DG. If there was no wind, Heading and Course
would be the same.