幹部
かんぶ · kanbu · JLPT N1 · noun
executive
👔 幹 (trunk, core) + 部 (department) = the core of a department: its management
幹 means trunk or backbone, as in a tree's main stem. The 幹部 are the backbone that holds each department up, so the word names the executives who run the organization.
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.'