silver jubilee (noun)

1. Why did the couple celebrate their 25th wedding anniversary with a silver jubilee? Because they wanted to make all their friends feel old!

2. The fashion industry held a glamorous event to honor the silver jubilee of a famous designer's career.

3. The country commemorated the silver jubilee of its independence from colonial rule with a grand celebration.

4. In the novel, the protagonist organized a silver jubilee party to mark the 25th anniversary of their successful book launch.