担当

1. Origins, structure, and basic meaning

• Structure: 担当(たんとう) means being assigned a particular duty or role, and it can also refer to the person assigned.
• Basic usage: It appears as 私が担当します when stating one's responsibility and as 新しい担当に伝える when referring to the new person in charge.

2. Common pitfalls and similar expressions

• Distinguish the work from the person
  • 〜を担当する means taking charge of a task; use 担当者 when it is helpful to identify the responsible person explicitly.
• Difference from 責任
  • 責任(せきにん) is accountability for an outcome, while 担当 is the assigned area of work or the person handling it.