1. 〔部類〕a class; 〔範疇〕a category; 〔区分〕a section, a department; 〔方面〕a branch, a field
    • この作品は伝記物語の部門に入る
    • This work falls [comes] 「under the heading [in the category] of biography.
    • この学問は三つの部門に分けられる
    • This field of study is divided into three areas.
    • 業界の諸部門からトップクラスの人々が集まった
    • The top people assembled from various branches [fields] of industry.