Obake is a Japanese word that refers to supernatural beings, such as ghosts, spirits, or monsters. There are a few synonyms that are commonly used to describe these supernatural creatures in Japan. Yurei is a Japanese term for ghosts, while yokai refers to a range of supernatural beings such as demons, monsters, and goblins. Oni refers to Japanese-style ogres or demons, and bakemono is used in a more general sense to describe any supernatural creature. Other synonyms for obake include kaibutsu, meaning monster or scary creature, and ayakashi, which refers to ghosts and spirits that are neither entirely good nor evil. These terms are frequently used to describe the supernatural beings that are present in Japanese folklore.