(in stories) an evil spirit

ghost

the act, state, of deluding or being deluded; a false opinion or belief, especially one that may be a symptom of madness

misconception, misbelief

(a spirit of) a dead person appearing to a person still living

spirit of the dead

an image in wood, stone etc of a god, especially used as an object of worship; a person or thing greatly loved or admired

person greatly admired

a ghost

ghost; figment of the imagination