改革

1. Origins, structure, and basic meaning

• Structure: 改革 is read as かいかく and is a noun and する verb for reforming an outdated system or organization by changing its structure.
• Basic usage: Discussion aimed at changing a system appears in 制度の改革, while reforming an organization appears in 組織を改革する.

2. Common pitfalls and similar expressions

• Structural change
  • It suits major changes to a system, operating method, or organizational framework rather than a small correction to one inconvenience.
• Difference from 改善
  • 改善 broadly means correcting problems to make a condition better, while 改革 focuses on fundamentally changing an existing system's structure and methods.