部|ぶbu[1]atamadaka (head-high)

1. noun, noun (suffix)department (in an organization, company, etc.); division; bureau; facultyabove 課, below 局
   新しんサービスの料金りょうきん設定せっていはマーケティング部ぶが行おこなう。↗

   The marketing department is responsible for pricing new service.
2. noun, noun (suffix)club (at a school, university, etc.); team
   バドミントン部ぶはまともな部員ぶいんが極端きょくたんに少すくないため、ほとんど廃部はいぶないし休部きゅうぶ状態じょうたいだった。↗

   There were so few proper members in the badminton club that it was half-way between dead and 'on break'.
3. noun, noun (suffix)part; portion; region; area
4. noun, noun (suffix)category; class; division; section; heading
5. countercounter for copies of a newspaper, magazine, book, etc.

• Synonym部門ぶもんNeutralA department within an organization, as in 「営業部門」; leans toward divisions by business area, while 「部」 often serves as a suffix in unit names.
• Synonym部署ぶしょNeutralYour assigned post or department, as in 「部署異動」; centers on the unit an individual works in.
• Synonym部局ぶきょくFormalFormal: the departments and bureaus of government offices; leans toward administrative bodies.
• SynonymセクションNeutralLoanword for a department, chapter, or block, as in 「セクション長」; used of both companies and texts.
• Synonym部分ぶぶんNeutralA part of a whole, as in 「一部分」; leans toward a portion or segment, not an organization.
• Related区分くぶんNeutralDividing an area or whole into sections; stresses the act of partitioning, not an organizational unit.
• Related分科ぶんかWrittenWritten/formal prose: subject divisions or conference sections, as in 「分科会」; leans toward specialized fields.
• Related種類しゅるいNeutralKinds or types, as in 「種類が多い」; only loosely connected to the classifying sense of 「部」.
• Related分野ぶんやNeutralA field of study or work, as in 「専門分野」; leans toward a domain or category.
• Related分類ぶんるいNeutralSorting things into categories; stresses the action, not the name of a unit.

For a company or school department or club, use 「部」, as in 「営業部」 and 「サッカー部」. For divisions by business area say 「部門」, for one's own post 「部署」, and for a field of specialization 「分野」.

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

1. （ブ）中国ちゅうごくや韓国かんこくや台湾たいわんやベトナム（∴日本にっぽんと北朝鮮きたちょうせん以外いがいの漢字かんじ文化圏ぶんかけん)における国家こっか機関きかんで、日本にっぽんの「省しょう」に当あたる。一般いっぱんに下位かいに「処ところ」を有ゆうする。
2. （ブ）役所やくしょや会社かいしゃにおいて、機能きのうごとに分わけた集団しゅうだん。総務部そうむぶ、経理部けいりぶなど。一般いっぱんに下位かいに「課か」を有ゆうする。
3. （ブ）主おもに学校がっこうにおいて、課外かがい活動かつどう（部活動ぶかつどう）をする集団しゅうだん。
4. （ブ）書籍しょせき・出版物しゅっぱんぶつに用もちいる助数詞じょすうし。