骨格

1. Origins, structure, and basic meaning

• Structure: 骨格(こっかく) refers both to the body's skeletal framework and to the basic structure of something.
• Basic usage: It appears in observing a bird's bones and in establishing the broad framework of a project.

2. Common pitfalls and similar expressions

• A bone and the overall framework
  • Whereas 骨 refers to bone, 骨格 focuses on the overall framework formed by the bones.
  • In the reading こっかく, preserve the small っ.
• The project metaphor
  • 企画の骨格 means the core structure supporting a project and can refer to its broad framework before the details are worked out.