How to say "protocol" in Japanese

• 調書ちょうしょCommon
  nounProtocol as an official written record: the documented record of an investigation or interrogation, serving as written evidence. It refers to the document itself, not to rules or etiquette.
• 議定書ぎていしょCommon
  nounProtocol in the diplomatic sense: a formal written agreement, especially one concluded between nations. This is the word for protocols in international relations.
• 手順てじゅんJLPT N1approx.Common
  nounProtocol in the sense of a set sequence of steps: the procedure or process for doing something. Use it when protocol means how to carry out a task, step by step.
  Windows XPにはＣＤを焼やく機能きのうがあるそうですが、その手順てじゅんを解説かいせつしているページを教おしえてください。↗

  I hear that you can burn CDs with Windows XP; could you tell me a website that explains the procedures involved?
• 規約きやくJLPT N1approx.Common
  nounProtocol as a code of rules agreed upon by a group or between parties; it also means agreement. The emphasis is on the rules themselves rather than on ceremonial behavior or step-by-step procedure.
  新あたらしい規約きやくは全会ぜんかい一致いっちで承認しょうにんされた。↗

  The new regulations were confirmed by the full committee.
• 儀礼ぎれいCommon
  nounProtocol in the sense of etiquette and formality: the ceremonial courtesies observed on formal or diplomatic occasions. It concerns polite behavior, not written documents or procedures.

Use 議定書 for a formal diplomatic agreement, 調書 for an official written record, 手順 for a step-by-step procedure, 規約 for a set of agreed rules, and 儀礼 for ceremonial etiquette.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 調書ちょうしょprotocol
• 議定書ぎていしょprotocol
• 手順てじゅんprocess
• 規約きやくagreement
• 儀礼ぎれいcourtesy
• プロトコルprotocol
• 通信規約つうしんきやくprotocol
• 協定書きょうていしょagreement
• 計画書けいかくしょplan