再建

1. Origins, structure, and basic meaning

• Structure: 再建 is read as さいけん and is a noun and する verb combining 再 (again) and 建 (build), for restoring a destroyed structure or weakened organization.
• Basic usage: Use the same transitive pattern for physical and organizational targets, as in 橋を再建する and 会社を再建する.

2. Common pitfalls and similar expressions

• Difference from 修理
  • 修理 fixes a damaged part; 再建 restores something that has collapsed or lost its overall function.
• Figurative extension
  • The literal idea of building again extends to restoring management, an organization, or a basis for life.