rouse

1. Origins, structure, and basic meaning

• Structure: 奮 is associated with rousing energy; its on-reading is ふん.
• Basic usage: 奮発(ふんぱつ) means splurging or spending generously, while 興奮(こうふん) means excitement.

2. Common pitfalls and similar expressions

• Spending extra and feeling excited
  • 奮発して良い席を予約した means that someone splurged and reserved good seats. It focuses on deciding to spend more than usual.
  • 興奮してなかなか眠れなかった means being too excited to fall asleep easily. 興奮 describes heightened feelings about an event such as a comeback or a trip.