The Greek word khthon is one of several for "earth"; it typically refers to that which is under the earth, rather than the living surface of the land (as Gaia or Ge does), or the land as territory (as khora χώρα does).
A palabra grega khthon é unha das moitas para "terra", e tipicamente refírese ó interior da mesma, en contraposición cos que viven na superficie (como Gaia) ou a terra como territorio (como khora (χώρα)).