塩田

1. Origins, structure, and basic meaning

• Structure: 塩田 (えんでん) is a compound noun for coastal saltworks where seawater is evaporated to produce salt.
• Basic usage: 海辺の塩田で塩を作る marks a current production site, while かつて塩田だった土地 predicates land whose former use has changed.

2. Common pitfalls and similar expressions

• Operating works and former site
  • 塩田で作る describes current production, whereas 塩田だった is a past state. The second site should not be assumed to remain operational.