In Western country, Halloween Day on 1st, November is one of the traditional festival. In regarding to the traditional significance, this festival is similar with the Dead Spirit Festival on 15th,July timing at lunar calendar in China. The day on 31st, October is defined to the Eve of Halloween.
Halloween Day is related to the ghost and the dead. So the topic of this festival certainly is about ghost, scare, dead, magic and monster. And many evil things like pumpkin, ghost, ghoul, witch,bat, black cat, night owl, demon, walking dead, human skeleton, vampire and so on certainly appear in this day.