Gaia as a proper noun is the mother of all things, including the titans, as well as zeus and all other gods. while Gaea as a proper noun is the earth, daughter of chaos, both mother and wife of uranus (the sky) and pontus (the sea).
Part of speech: proper noun
Definition: The mother of all things, including the Titans, as well as Zeus and all other gods.
Part of speech: proper noun
Definition: The earth, daughter of Chaos, both mother and wife of Uranus (the sky) and Pontus (the sea).
We hope you now know whether to use Gaia or Gaea in your sentence.