a ghost 鬼;鬼魂;幽灵 the phantom of his dead father 他已故父亲的幽灵
a thing that exists only in your imagination 幻觉;幻象 Phantoms and chimeras inhabited her brain. 幻影和嵌合体占据了她的大脑。
Word OriginMiddle English (also in the sense ‘illusion, delusion’): from Old French fantosme, based on Greek phantasma, from phantazein ‘make visible’, from phainein ‘to show’.