Probably geocentrical?
The meaning of gravity in Tagalog is "grabedad." It refers to the force that pulls objects towards the center of the Earth.
Core
It is a Greek word meaning 'earth or land measurements'
The root word for geographical is "geo," which comes from the Greek word meaning "Earth."
The Chinese word tu - 土 - tŭ means earth
josh is a clanger
Geo is used mostly to mean earth. For example geography combines geo meaning earth and graph meaning picture making (crudely) the study of earth's pictures. Another example the word geosynchronous, geo again meaning earth, syn meaning same, chrono(s) meaning time forming the word that explains satellite's coupled movement with the earth.
"Eccentric" comes from the idea of "away from the center."
The word "geography" is derived from the Greek words "geo" meaning Earth and "graphy" meaning to write, which is a field of science that studies the Earth's physical features and processes, including its landforms, climates, and ecosystems.
The core is the center of the Earth.
The word formed from the Creek root meaning "earth" is "geo," as in "geology" or "geography."
It could be our world - Earth. Or it could be soil - which is often called earth. Therefore, soil could be the word.