noun
diplomatic message from a head of state; sovereign letter
Formal term for an official letter or message sent by a monarch or head of state to another sovereign. Used in historical and diplomatic contexts.
江戸時代、オランダ国王から将軍に国書が届けられた。
In the Edo period, a diplomatic letter was delivered from the King of the Netherlands to the shogun.
大使は信任状とともに国書を奉呈した。
The ambassador presented his credentials along with the sovereign letter.
noun
Japanese book; book written in Japanese; national literature of Japan
Refers to books written in the Japanese language, especially in contrast to Chinese classics or foreign works. Often used in historical or literary contexts.
平安時代には多くの国書が編纂された。
Many Japanese books were compiled during the Heian period.
この図書館には貴重な国書が所蔵されている。
This library houses valuable national literature.