As I said above, where did the term "Zombie" originate from? Why can't we just call them the "reanimated"?
But this historical meaning has a factual basis in social relationships and ritual within a specific religious context. (For an easy read on the topic, try Zora Neal Hurston's Tell My Horse.) The 20th century popular media variations (i.e. genesis magical, divine, or pathogenic?, fast zombies versus slow zombies, etc.) are more a construction of Hollywood (a la the 1932 Bella Lugosi film White Zombie, and especially the Romero zombie cycle, including adaptations), comic books (e.g. Tales of the Zombie, etc.), and other popular media and cultural phenomena (e.g. zombie flash mobs, and video games) that borrows a very rough approximation to the Haitian phenomenon, but mostly builds off iterations of its own cultural reinterpretion.
Origin of ZOMBIE
Louisiana Creole or Haitian Creole zonbi, of Bantu origin; akin to Kimbundu nzúmbe ghost First Known Use: circa 1871
and From Wikipedia
The English word "zombie" is first recorded in 1819, in a history of Brazil by the poet Robert Southey, in the form of "zombi". The Oxford English Dictionary gives the origin of the word as West African, and compares it to the Kongo words "nzambi" (god) and "zumbi" (fetish).