What do we call the rituals that signify and validate the transition from one life stage to another?

Question

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Rites of passage are specific rituals that signify and validate the transition from one life stage to another. These transitions can be related to birth, marriage, adulthood, death, and other significant life events. The purpose of these rituals is to mark a significant change in someone's life and to provide a sense of identity and belonging within their community.

What Do We Call the Rituals That Signify and Validate