The 50th anniversary can refer to different events, people, and nations. Here are some examples:

• Golden Wedding Anniversary: The 50th wedding anniversary is famously known as the golden wedding anniversary, with gold being both the milestones traditional gift material and associated color. This precious metal represents wisdom, prosperity, and strength, making it a fitting tribute to a marriage that has lasted for over half a century.

• Golden Jubilee: A golden jubilee marks a 50th anniversary. It variously applies to people, events, and nations. For example, in Bangladesh, golden jubilee refers to the 50th anniversary year of the separation from Pakistan. In Singapore, the "Singapore50" initiative was launched in 2015 to celebrate 50 years of independence from Malaysia.

• Other 50th anniversaries: There are other 50th anniversaries that are celebrated with different symbols. For example, the 50th anniversary of the American automotive industry was celebrated in Detroit, Michigan, in 1946. In Kenya, the Nation Media Groups Daily Nation and Sunday Nation celebrated their golden jubilee in 2010 after 50 years from being published for the first time. Kingseat Hospital in New Zealand celebrated 50 years of operation in 1982, and Maeroa Intermediate in 2004.

In summary, the 50th anniversary can refer to different events, people, and nations, and the symbol associated with it varies depending on the occasion.