拡張

1. Origins, structure, and basic meaning

• Structure: 拡張 (かくちょう) means widening space, function, or scope. 拡張した is active; 拡張される is passive expansion of a target range.
• Basic usage: A parking lot is physically enlarged after user growth; new features broaden the uses of software.

2. Common pitfalls and similar expressions

• Physical expansion of space and extension of functional scope
  • The first object is 駐車場を; the second subject is 用途が. Distinguish both voice and concrete versus abstract scope.