秋口

1. Origins, structure, and basic meaning

• Structure: 秋口 is read あきぐち.
• Basic usage: It refers to early fall, when autumn is just beginning.

2. Common pitfalls and similar expressions

• Time of seasonal change
  • 秋口になると: the point when early fall arrives and the air becomes cooler.
• End of a period
  • 秋口まで: the flowering period continues into early fall.