That is a very difficult question to answer, but here are a few (not all) answers.
Collective nouns for witches: Coven, convocation, circle, heath, hearth, grove, or gathering.
Other reasons why witches gather: celebration, rite, rite of passage, Sabbat, Esbat, ritual, coffee-klatch, study group, or gathering of friends.
Some common monthly rituals performed after death in different cultures around the world include offering food and prayers to the deceased, visiting their gravesites, lighting candles or incense in their memory, and holding memorial services or ceremonies. These rituals are often seen as a way to honor and remember the deceased and to maintain a connection with them even after they have passed away.
Priests performed rituals in Rome. There were several priesthoods, each tending to specific gods and officiating specific rituals.
The Greeks performed rituals.
priests
Greeks sought their gods' favor.
They sometimes performed human sacrifice
Certain rituals have been performed for thousands of years and have acquired a lot of meaning. Rituals can evoke spiritual/mental/emotional states which can include memories.
Service patrols in Boy Scouts handle the rituals at boy scout meetings. These rituals include the opening flag ceremony, reciting the oath and law at the start and end of the meeting, and policing the area after the meeting to leave it as good as, or better than they found it.
Ritual monsters, and the rituals for them are in your regular deck.
It means followers who protest against the religious rituals performed differently as mentioned in The Bible (New Testment)
The rituals of hajj are mainly be performed in Makkah (or Mecca) and its vicinity area. For details of these rituals you may refer to links below.
An agiary is a Parsi fire temple in which fire was kept burning and rituals were performed.