organize · urge

1. Origins, structure, and basic meaning

• Structure: 催 is used for holding events or urging action and is read さい in 開催(かいさい) and 催促(さいそく).
• Basic usage: 催す(もよおす) can describe holding an event or experiencing a feeling.

2. Common pitfalls and similar expressions

• Meaning according to the object
  • 写真展を催す means holding a photography exhibition, whereas 眠気を催した means feeling sleepy. The words before を lead to different senses.