Earth Mother vs Rhea

Earth Mother

noun

  • The Great Goddess of the Earth and fertility. 

  • A figurine or depiction of this goddess. 

Rhea

name

  • A Titan, the daughter of Uranus and Gaia, the mother of Demeter, Hades, Hera, Hestia, Poseidon, and Zeus. 

  • A female given name from Ancient Greek in occasional use. 

  • The asteroid 577 Rhea. 

  • Saturn V, one of the moons of Saturn. 

  • A surname 

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