Zombies are typically incapable of communication and show no signs of personality or rationality, though George Romero's zombies appear capable of learning and very basic levels of speech as seen in the films Day of the Dead and Land of the Dead. Customarily, zombies aren't depicted as thralls to masters, as in the flick White Zombie or the spirit-cult legends. Rather, modern zombie action figures are outlined in mobs and waves, seeking either flesh to eat or folks to kill, and are sometimes rendered to exhibit signs of physical decomposition like rotting flesh, stained eyes, and open sores, and moving with a slow, shambling gait.

Usually, these creatures can sustain damage miles beyond that of a standard, living human. Sometimes these can only be snuffed out by a wound to the head, for example a headshot, and can pass whatever syndrome that causes their condition onto others. Modern zombie action figures, as portrayed in books, films, games, and haunted attractions, are dissimilar from both voodoo living dead and those of folklore. Modern zombies are usually outlined in popular culture as mindless, unconcerned monsters with a hunger for human flesh, a prototype established in the seminal 1968 film Night of the Living Dead.

A zonbi is a person who is believed to have died and been brought back to life without speech or free will. It is akin to the Kimbundu nzmbe ghost. There are several possible etymologies of the word zombie. One possible origin is jumbie, the West Indian term for "ghost". Another is nzambi, the Kongo word meaning "spirit of a dead person." According to the Merriam-Webster dictionary, the word entered English circa 1871 and comes from the Louisiana Creole or Haitian Creole zonbi, which in turn is of Bantu origin.

Stories of living dead originated in the Afro-Caribbean spiritual belief system of Vodou, which told of the people being controlled as laborers by a strong sorcerer. Zombies became a popular device in modern horror fiction, mostly due to the success of George A. Romero's 1968 film Night of the Living Dead. A zombie is a creature that appears in folklore and favored culture typically as a reanimated corpse or a mindless human.