Observance
Part of speech: noun
Definition: The practice of complying with a law, custom, command or rule The custom of celebrating a holiday or similar occasion Observation or the act of watching A rule governing a religious order, especially in the Roman Catholic church
Example sentence: My observance as a practicing Muslim in the NBA is somewhat uncommon. Since joining the league in 2011, my dedication to my faith has aroused the curiosity of teammates, coaches, trainers and fans.
Ceremony
Part of speech: noun
Definition: A ritual with religious significance.An official gathering to celebrate, commemorate, or otherwise mark some event.Formal socially-established behaviour often in relation to people of different ranks.
Example sentence: There are few hours in life more agreeable than the hour dedicated to the ceremony known as afternoon tea.