慶祝

1. Origins, structure, and basic meaning

• Structure: 慶祝 is read as けいしゅく and is a formal verbal noun for celebrating an auspicious public occasion.
• Basic usage: It is used for a school centenary or a king’s accession marked by an official gathering.

2. Common pitfalls and similar expressions

• Object celebrated
  • 創立百年を慶祝する and 即位を慶祝する mark the celebrated event with を.
• Formality and scale
  • Both examples involve ceremonies or international envoys, giving the word a more formal range than a casual personal celebration.