基幹

1. Origins, structure, and basic meaning

• Structure: 基幹, read きかん, combines foundation 基 with trunk 幹 to denote the backbone supporting a system.
• Basic usage: It denotes the central backbone supporting an organization or system, as in 交通の基幹.

2. Common pitfalls and similar expressions

• Scope and context
  • It has a stronger structural sense of a core on which other elements depend than merely an important part 重要部分.