The Walking Dead (franchise)
The Walking Dead is a media franchise created by Robert Kirkman and Tony Moore including a comic book series, two television series, six novels, video games, and various other media such as audio books and sound tracks.
The Walking Dead (comic book)
The "zombie idea" developed by George Romero does not exist in "The Walking Dead" universe; hence, of all the myriad terms used to describe the undead by different communities, the word "zombie" has been deliberately avoided. While it has been used extremely rarely in the comics, it has never been used in the television adaptation.