Ceremony (noun)

1. A formal act or set of acts prescribed by ritual, protocol, or convention, especially a religious or public one.
2. A formal event or celebration, especially one marking a significant occasion or event.

Origin:

The word "ceremony" has its roots in the latin word "caerimonia" meaning religious observance. it was first used in english in the late 15th century to describe a formal act or observance.

Examples:

1. The wedding ceremony was held at the church.
2. The graduation ceremony was a grand affair with speeches and awards.
3. The opening ceremony of the Olympics was a spectacular display of culture and unity.
4. The ceremony was attended by important dignitaries from around the world.
5. The ceremony was a solemn occasion, marked by prayers and the lighting of candles.