脱穀

1. Origins, structure, and basic meaning

• Structure: 脱穀 (だっこく) is separating grain from harvested plants. The examples use a verb and compound 脱穀道具.
• Basic usage: Harvested rice is threshed by machine; old threshing tools are displayed.

2. Common pitfalls and similar expressions

• Machine processing of grain and historical implement
  • 稲を脱穀する is the operation; 脱穀道具 is equipment for it. Distinguish harvesting from this later separation step.