閉塞

1. Origins, structure, and basic meaning

• Structure: 閉塞, read へいそく, means a blocked passage or a state in which progress is stalled.
• Basic usage: It is used for a blocked pipe or frustration when a discussion cannot move forward.
  • 配管の閉塞が水漏れの原因だった。

2. Common pitfalls and similar expressions

• Blockage compared with 閉鎖
  • 閉塞 focuses on an obstructed flow or passage, while 閉鎖 focuses on closing an entrance or facility so it cannot be used.