重～
じゅう～ · juu～ · JLPT N2 · noun
heavy
⚖️ 重力 (じゅうりょく) = heavy + force, meaning gravity
重い (おもい) is the native verb for heavy. The on-reading じゅう appears in compounds such as 重量 (weight, heavy + quantity) and 重力 (gravity, heavy + force).
重 — person 人 + east 東 (phonetic)
Originally depicted a person carrying a heavy bundle on their back, suggesting weight and burden. The 東-like element served as a phonetic component. Over time the character split into two readings: zhòng meaning 'heavy' and chóng meaning 'repeat/again'.