用法
ようほう · youhou · JLPT N1 · noun
direction
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.
法 — water 氵 + go 去
Originally written 灋, combining the water radical 氵 (suggesting a level standard, like water finding its level), the mythical beast 廌 (which judged guilt), and 去 (to remove or banish). The 廌 was later dropped, leaving 法. The core meaning evolved from 'law' or 'standard' to also include 'method' and 'way of doing'.