仕掛け

1. Origins, structure, and basic meaning

• Structure: 仕掛け is read しかけ and means a device or scheme arranged to produce an effect.
• Basic usage: It is used for a device that makes a doll pop out of a box and for a culprit's scheme uncovered by a detective.

2. Common pitfalls and similar expressions

• Focus compared with 仕組み
  • 仕組み(しくみ) focuses on how a whole system is organized and works. 仕掛け focuses on a part or arrangement prepared to produce a particular effect or response.