構想

1. Origins, structure, and basic meaning

• Structure: 構想 (こうそう) is an overall concept or plan for something not yet completed, such as a building or literary work.
• Basic usage: A new library concept is organized visually; a long-developed novel plan is explained to someone else.

2. Common pitfalls and similar expressions

• Architectural concept visualized and story plan developed over time
  • 図書館の構想 concerns a space and facility, while 小説の構想 concerns plot and direction. Neither refers to the finished product itself.