新幹線bullet train (very high speed)幹(tree) trunk幹線main line幹部management
部 ぶ
全部All部長head of a section大部分most part部分portion外部the outside学部department of a university部首radical (of a kanji character)部品parts本部headquarters一部one copy e.g. of a document一部分a part幹部management警部police inspector大部most (e.g. most part)内部interior部department部下subordinate person部門class