Both personify the earth as a primordial parent within their pantheon's cosmogony, though Egyptian tradition genders the earth as male rather than female
At a glance
Greek Pantheon
tradition
Egyptian Pantheon
the earth, primordial creation, motherhood of the Titans and Giants
domains
the earth, fertility, kingship, earthquakes (as his 'laughter')
the earth itself, cornucopia (later art), serpents (in Gigantomachy imagery)
symbols
the goose, vegetation growing from a reclining body, green skin (in some depictions)
Ge, Gaea, Tellus (Roman)
also called
The Great Cackler (epithet)
Where they meet
Both are gods of the earth.
Where they part
Gaia alone
primordial creation, motherhood of the Titans and Giants
Geb alone
fertility, kingship, earthquakes (as his 'laughter')
How each was worshipped
Gaia
Cult sites: Shared sanctuary traditions at early Delphi (pre-Apolline oracle, per later Greek tradition), Altars at Athens and Olympia.
Festivals: Invoked in solemn oaths alongside Uranus and the underworld rivers.
Gaia's cult was diffuse rather than centered on grand temples: oaths, first-fruits offerings to the earth, and the tradition — reported by later Greek writers, not universally accepted by modern scholars — that Delphi's oracle originally belonged to her before passing to Themis and then Apollo.
Geb
Cult sites: No major independent state temple; honored primarily through royal kingship ideology and funerary texts.
Geb's cult was expressed less through dedicated temples than through his central place in the ideology of kingship, with pharaohs formally described as occupying 'the throne of Geb,' and through funerary texts that invoked him as guardian and judge of the dead within the earth.
Gaia
Greek Pantheon
Primordial goddess of the Earth, one of the first beings to emerge from Chaos. Gaia is the mother of the sky (Uranus), the sea (Pontus), the Titans, the Cyclopes, and, through the blood of Uranus, the Giants and the Furies.
Gaia emerged directly after Chaos as one of the first primordial beings. She alone brought forth Uranus (the Sky) and Pontus (the Sea), then united with Uranus to bear the Titans, Cyclopes, and Hecatoncheires, becoming the ancestral mother of nearly every subsequent generation of gods.
In Hesiod's *Theogony*, Gaia is among the very first entities to exist, arising after Chaos as "the ever-sure foundation of all." From herself alone she bore Uranus, the starry Sky, to cover her on every side, and Pontus, the sea. She then united with Uranus to bear the twelve Titans, the three one-eyed Cyclopes, and the three monstrous Hundred-Handed Ones (Hecatoncheires).
God of the earth, son of Shu, consort of Nut, and father of Osiris, Isis, Set, and Nephthys. Geb is depicted reclining beneath the arched figure of Nut, and stands within the Ennead's line of divine kingship passed down from Atum through Shu to Osiris.
Geb was born to Shu and Tefnut and, with his sister and consort Nut, fathered Osiris, Isis, Set, and Nephthys. Within the Ennead's line of succession, Geb inherited kingship from his father Shu and passed it to his son Osiris, tying the living pharaoh's own throne back to this primordial chain of divine rulers.
Geb is the personification of the earth in Egyptian cosmology, son of Shu and Tefnut and, with his sister and consort Nut, father of Osiris, Isis, Set, and Nephthys. Egyptian art typically shows him reclining on the ground beneath the arched body of Nut, sometimes with green skin or with vegetation sprouting directly from his form, imagery that ties him closely to the fertility of the land and its crops.