用紙
ようし · youshi · JLPT N1 · noun
form
📄 用紙 = use + paper: paper made for a particular use, which is a form
用 means use and 紙 means paper, so 用紙 is paper meant for a purpose. A form is exactly that: a sheet you fill in for a specific job.
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.