内部
nèibù · HSK 4
interior
🏠 内 = inside + 部 = part/section; together = inner part, interior
内 means inside or within, and 部 means a section, department, or part. Combined, 内部 literally reads as inside-section, giving the sense of interior or internal workings of an organisation, body, or object.
内 — enclosure 冂 + enter 入
内 originally depicted something entering (入) into an enclosed space (冂), giving the core sense of 'inside' or 'within'. The pictographic image of going into a covered area extended naturally to meanings like inner, internal, and inland. It contrasts with 外 ('outside').
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.'