移り変わり

1. Origins, structure, and basic meaning

• Structure: 移り変わり (うつりかわり) is a process of successive change over time. Both examples make it an object, with perception and documentation.
• Basic usage: Seasonal transition is sensed from a window; photographs convey how a streetscape has changed.

2. Common pitfalls and similar expressions

• Seasonal change perceived and urban transition documented
  • 季節の selects cyclical change; 町並みの selects historical transition. The core is passage over time rather than one abrupt alteration.