I think it just depends on where you live on what you call them. They are the same animal and some call them whistle pigs and land beavers.
Found this on the net:
The word “woodchuck” is associated with the groundhog due to fact that the Algonquian name for the groundhog is “wuchack.” From there, it evolved into “woodchuck.” It has been the subject of a famous tongue twister and a day dedicated to the animal.
I am planning on relocating the outlet closer to my rock work. I’m working on rebuilding my waterfall so I plan on running a large enough electrical conduit under the rocks that the pump wire and the hose to the filters in the waterfall can be ran though it. Mr ground hog will have to find something else to munch on. It will also hide the hose and wire while stile allowing me to remove them without having to dig them up or disturb the rock work. Hope to start this weekend. Have rocks covering the wire now.