metempsychosis vs samsara

metempsychosis

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

samsara

noun
  • In Jainism, Hinduism, Buddhism, and some other eastern religions, the ongoing cycle of birth, death, and rebirth endured by human beings and all other mortal beings, and from which release is obtained by achieving the highest enlightenment. 

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