In Hinduism, demons are called "asuras". "Patala" is thought to be an underground place below the Earth, where humans live. "Asura" means supernatural beings that were good or bad. People who do evil and horrible things in their lives, by reincarnation, will turn into evil, ghost spirits called "Vetalas, Pishachas, Bhūtas". In Japanese folklore, there are malevolent spirits called "oni" (鬼), a Japanese word translatable as "demon" in English.