警部
けいぶ · keibu · JLPT N1 · noun
inspector
🚓 警 = police + 部 = department: the inspector heads a police department
部 — 阝(邑) right + 咅 phonetic
The right-side 阝 derives from 邑 (city/settlement), giving the meaning of a region, district, or administrative division. The left side 咅 supplies the sound. Originally referring to a settlement, the meaning broadened to 'part,' 'section,' or 'ministry.'