The act or practice of observing or noticing with attention; a heeding or keeping with care; performance; -- usually with a sense of strictness and fidelity; as, the observance of the Sabbath is general; the strict observance of duties.
An act, ceremony, or rite, as of worship or respect; especially, a customary act or service of attention; a form; a practice; a rite; a custom.
The possibility of divorce renders both marriage partners stricter in their observance of the duties they owe to each other. Divorces help to improve morals and to increase the population. Denis Diderot
Since the birth of modern Orthodox Judaism in 19th-century Germany, a central goal of the movement has been to normalize the observance of traditional Jewish law - to make it possible to follow all 613 biblical commandments assiduously while still participating in the reality of the modern world. Noah Feldman
To the house of a friend if you're pleased to retire, You must all things admit, you must all things admire; You must pay with observance the price of your treat, You must eat what is praised, and must praise what you eat. George Crabbe