衰退

1. Origins, structure, and basic meaning

• Structure: 衰退, read すいたい, means losing strength or vitality and becoming less flourishing than before.
• Basic usage: In 人口の減少で商店街の衰退が進んだ。, the shopping district declines as the population decreases.

2. Common pitfalls and similar expressions

• A process of decline
  • 衰退が進んだ and 衰退する過程 focus on the progression of weakening. They describe a district or kingdom losing its prosperity rather than the moment it disappears entirely.