国産

1. Origins, structure, and basic meaning

• Structure: 国産, read こくさん, denotes an agricultural good, product, or material produced within one’s own country.
• Basic usage: It describes vegetables grown domestically and a desk made from domestic lumber.

2. Common pitfalls and similar expressions

• Country of production, not place of sale
  • It indicates that cultivation or production occurred within the country, not merely that the item is sold there.