an act or instance of following, obeying, or conforming to

the observance of traffic laws.

a keeping or celebration by appropriate procedure, ceremonies, etc.

the observance of the Sabbath.

a procedure, ceremony, or rite, as for a particular occasion

patriotic observances.

a rule or custom to be followed or obeyed; a customary practice.

Roman Catholic Church .

a rule or discipline for a religious house or order.

a house or order observing a rule or discipline.

an act or instance of watching, noting, or perceiving; observation.

respectful attention or service.

Archaic . courteous attention as to a person; dutiful service.

noun

carelessness , heedlessness , neglect , thoughtlessness , unorthodoxy

noun

acknowledgment , acquittal , acquittance , adherence , awareness , carrying out , celebration , cognizance , compliance , discharge , fidelity , fulfillment , heed , heeding , honoring , keeping , mark , mind , note , notice , obedience , observation , performance , regard , remark , satisfactionnotes:observance refers to the following of a custom , duty , or law; observation refers to the act of noticing or recording , ceremonial , custom , fashion , form , formality , liturgy , practice , ritual , rule , service , traditionnotes:observance refers to the following of a custom , commemoration , office , rite , attention , espial , scrutiny , ceremony , tradition