Probably geocentrical?
The meaning of gravity in Tagalog is "grabedad." It refers to the force that pulls objects towards the center of the Earth.
It could be our world - Earth. Or it could be soil - which is often called earth. Therefore, soil could be the word.
Core
It is a Greek word meaning 'earth or land measurements'
The word is found in both Latin and Greek meaning ' a description of the Earth's surface. From 'ge' meaning 'earth' and graphia meaning 'description'
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.
The Chinese word tu - 土 - tŭ means 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 word "geothermal" is derived from the Greek words "geo" meaning "earth" and "thermos" meaning "heat". It describes heat that comes from the earth's interior.
The core is the center of the Earth.
The word formed from the Creek root meaning "earth" is "geo," as in "geology" or "geography."