Things of spiritual interest

ceremonies

A ceremony is an activity, infused with ritual significance, performed on a special occasion.

Celebration of life
Traditionally, a ceremony may mark a rite of passage in a personal human career, marking the significance of (for example):

Birth
Initiation
Puberty
Social adulthood
Graduation
Marriage
Death
Burial

In certain circumstrances a ceremony may only be performed by a person with certain authorities. For example, the opening of Parliament is controlled by the Speaker of the House. Tha naming and launching of a war ship will be under the supervision of its Captain or a higher ranked naval officer. A wedding will be performed by a priest or a Civil Celebrant, as in Australia.