They are all just local names for the groundhog. Usually hunted in fields w rimfire or centerfire rifles, depending on your location. I have hunted them w my shotgun, muzzleloader and pistol at times. They are fun to hunt, have no closed season, no bag limits and most farmers encourage you to shoot them. I have gotten permission to hunt deer on more than one farm by hunting groundhogs in the summer. Good luck and be safe.