部長

1. Origins, structure, and basic meaning

• Structure: 部長 (ぶちょう) is a noun for the managerial position responsible for a department within an organization.
• Basic usage: 部長に企画案を説明する marks the superior receiving a proposal, while 新しい部長は声をかける makes the manager addressing the whole department the subject.

2. Common pitfalls and similar expressions

• Reporting recipient and managerial action
  • 部長に marks the recipient of an explanation, while 部長は introduces the acting manager. These examples do not establish a company president or a school club captain.