用語
ようご · yougo · JLPT N2 · noun
term
📖 用 (use) + 語 (word) = words put to use in a specific field
用語 is the vocabulary of one subject, such as medical or legal words. 用 means use and 語 means word, so a term is a word used for a particular field.
用 — pictograph of a bucket or wooden pail
用 originally depicted a bucket or container, possibly a sacrificial vessel made of wood. Over time it was borrowed to mean 'to use' or 'employ,' losing its concrete object sense. The modern meaning 'use' has been standard since early classical Chinese.