Ritual

A ritual "is a sequence of activities involving gestures, words, and objects, performed in a sequestered place, and performed according to set sequence".[1] Rituals may be prescribed by the traditions of a community, including a religious community. Rituals are characterized but not defined by formalism, traditionalism, invariance, rule-governance, sacral symbolism, and performance. https://en.wikipedia.org/wiki/Ritual

cf Culture, Theater, Ceremony, CargoCult, Very Small Shell Script