metempsychosis vs transmigration

metempsychosis

noun
  • Transmigration of the soul, especially its reincarnation after death. 

transmigration

noun
  • The movement of a soul from one body to another after death; metempsychosis. 

  • Departure from one's homeland to live in another country; migration. 

  • A change from one state of existence to another. 

How often have the words metempsychosis and transmigration occurred in a corpus of books? (source: Google Ngram Viewer )