Metempsychosis :: Metempsychosis (n.) The passage of the soul, as an immortal essence, at the death of the animal body it had inhabited, into another living body, whether of a brute or a human being; transmigration of souls..
Psychosis :: Psychosis (n.) Any vital action or activity.
Psychosis :: Psychosis (n.) A disease of the mind; especially, a functional mental disorder, that is, one unattended with evident organic changes..