A 25th birthday is often referred to as a "silver birthday". This term comes from the tradition of giving silver on the 25th anniversary of a wedding or other significant event. The term "silver jubilee" is also used to mark a 25th anniversary, whether it is a wedding anniversary, the 25th year of a monarchs reign, or anything else that has completed or is entering a 25-year mark. The term "jubilee" refers to a special anniversary, especially a 25th or 50th one.