天地
てんち · tenchi · JLPT N1 · noun
earth
🌍🌌 天 (heaven) + 地 (earth) = heaven and earth together, meaning the whole universe
The two characters pair the sky above with the ground below. Joined, they name everything between heaven and earth, which is the universe as a whole.
天 — 一 (one/sky) above 大 (big person)
Originally a pictograph of a person (大) with an emphasized head, representing what is above — the sky or heavens. The top stroke evolved into 一, symbolizing the vast expanse overhead. From 'sky' it extended to mean 'day,' 'heaven,' and 'nature.'
地 — earth 土 + 也 (phonetic)
地 is a semantic-phonetic compound. The left component 土 means 'earth' or 'soil' and gives the meaning, while 也 on the right hints at the pronunciation. Originally referring to the ground or land, it broadened to mean 'place,' 'region,' and 'territory.'