An official document that serves as written proof or evidence. Composed of 証 (proof) + 書 (document).
Compounds
- 卒業証書: diploma, graduation certificate
- 借用証書: promissory note, loan certificate
- 保険証書: insurance policy
- 権利証書: title deed
- 贈与証書: deed of gift
Similar words
- 証明書: certificate — used for everyday administrative certificates (住民票, proof of residence; 在学証明書, enrollment certificate). 証書 is more formal and refers to documents of greater legal weight, such as diplomas and deeds.