Curtain tracks (also known as curtain rails) are traditionally operated by either a cord (Corded Tracks) that you use to open and close the curtains, pulling the curtains by hand (Uncorded Tracks) or by a drive belt with electric motor (Electric Tracks).
Traditionally they differ from curtain poles because of the way they operate, that is by using gliders rather than rings that encircle the curtain poles. This has changed over the years with the introduction of curtain poles with gliders. These products look like the traditional curtain poles but operate like tracks. This makes them a much more efficient curtain rail design and suitable for long lengths and bay windows.