摂政

1. Origins, structure, and basic meaning

• Structure: 摂政（せっしょう） refers to governing on behalf of a ruler, to the regent, or to the institution of regency.
• Basic usage: The first example refers to a person acting for a young ruler; the second discusses the system.

2. Common pitfalls and similar expressions

• Person and institution
  • In 摂政が政務を担った, the person carrying out government affairs is the subject. 摂政制度 refers to the institution of that role.
• Timing in the reading
  • In せっしょう, the small っ lengthens the initial consonant of the following しょう, whose vowel is also long. Preserve both the consonant length and the vowel length.