This is the 5317th most frequent Japanese word.
geo
The Japanese word "geo" does not have a direct meaning in Japanese—it is typically used as a prefix derived from Greek, meaning "earth" in contexts like geography or geology.
In this sentence, '地形 (chikei)' refers to the terrain or geological features, illustrating a use of 'geo' as related to the Earth's physical characteristics.
その町の地形はとても独特だ。
The geography of the town is very unique.
Here, '地球 (chikyuu)' incorporates 'geo' in the sense of referring to the Earth, specifically in the context of environmental science.
地球温暖化は大きな問題です。
Global warming is a significant issue.
In this case, '地質学 (chishitsugaku)' combines 'geo' indicating Earth and '学' (learning or study) to mean the scientific study of the Earth's physical structure and substance.