主軸

1. Origins, structure, and basic meaning

• Structure: 主軸, read しゅじく, denotes the central mainstay of an organization or the principal shaft of a machine.
• Basic usage: It covers a figurative mainstay of a team and the literal central shaft driving a machine.

2. Common pitfalls and similar expressions

• Central role and physical shaft
  • Context distinguishes the figurative core of a team or plan from the technical main shaft of a mechanism.