travel document
Refers to official documents needed for international travel, such as passports, visas, and entry permits.
A valid travel document is required for overseas travel.
パスポート is a specific type of travel document, while 旅行文書 is a broader term covering any official document for travel.
旅券 is a formal term for passport, often used in legal contexts; 旅行文書 is a more general term.
Compound of 旅行 (travel) and 文書 (document).