Other forms: observances
Observance is the keeping of a rule, a law or a holy day. Religious observance, strict observance, the observance of the sabbath.
It is about doing rather than believing — a person can keep every observance and hold none of the beliefs behind them, and that gap is a real subject in the sociology of religion. Note observation, which is about watching; the two nouns split their senses cleanly.
1nounobservanceThe keeping of a rule, law or holy day.
“Shops close early for the observance of the religious holiday.”
observance is a keeping.
Latin observantia comes from observare, to watch or keep — ob plus servare, to keep.
Latin
observantia
Old French
observance
English, today
observance
From Old French observance, from Latin observantia. Equivalent of observe + -ance.
Etymology from Wiktionary, CC BY-SA