证件
zhèng jiàn · HSK 3
document
📄🪪 证 = prove/certify + 件 = item/document
证 means to prove or certify (think 证明 = proof); 件 is a measure word for documents or items. Together: a certified document, i.e. credentials or ID papers.
证 — speech radical 讠 + 正 (correct/upright)
证 is a semantic-phonetic compound. The speech radical 讠 (言) signals it relates to words or testimony, while 正 (zhèng, 'upright/correct') gives the sound and hints at 'verifying truth.' Originally written 證, it meant to testify or prove; today it means evidence, certificate, or to prove.
件 — person radical 亻 + ox 牛
件 combines the person radical 亻 with 牛 (ox). Originally it referred to dividing or counting items, with oxen being valuable units of property to count. It came to mean a measurable item or matter, and today serves as a measure word for things, documents, and affairs.