内訳
うちわけ · uchiwake · JLPT N1 · noun
item
📦 内訳 = 内 (inside) + 訳 (translate, reason): the reasons inside, broken out item by item
内 means inside and 訳 means division or reason. Together they name the parts laid out inside a total, so a breakdown lists what the whole is made of.
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').