Directly related (etymologically):
* Ge- words: Many words beginning with "geo-" are derived from Gaea, referring to the earth or its features. Examples include:
* Geography: The study of the Earth's physical features.
* Geology: The study of the Earth's structure and substance.
* Geophysics: The physics of the Earth.
* Geochemistry: The chemistry of the Earth.
* Geode: A hollow, mineral-lined rock.
* Geothermal: Relating to the heat within the Earth.
* Gaia: The modern, often capitalized, spelling is used frequently, especially in discussions of the Earth as a self-regulating system (the Gaia hypothesis).
Indirectly related (conceptually or through similar roots):
* Tellus (Roman): The Roman equivalent of Gaea.
* Terra (Latin): Latin for "earth," sharing a similar conceptual root.
* Earth: The English word for the planet, ultimately related to older Germanic roots but conceptually aligned.
* Ground: The surface of the earth.
* Soil: The upper layer of earth.
* World: In some contexts, referring to the planet Earth.
The connections are sometimes tenuous, depending on how far back you trace the etymology. The "geo-" prefix offers the clearest and most direct linguistic link to Gaea.