This article explores the history of ghosts in Japanese culture and the different names used to refer to them, including yūrei (幽霊) which encompasses all types of spirits, onryō (怨霊) which are vengeful spirits seeking revenge, bakemono (化け物) which are monsters, and funayūrei (船幽霊) which are ghosts that haunt ships at sea. It provides insight into how Japanese people view ghosts throughout history until today where despite modern technology still believe them capable causing harm if not appeased properly.