Authority
Part of speech: noun
Definition: The power to enforce rules or give orders. Persons in command; specifically, government. A person accepted as a source of reliable information on a subject.
Example sentence: My speaking style was criticised by no less an authority than Arnold Schwarzenegger. It was a low moment, my friends, to have my rhetorical skills denounced by a monosyllabic Austrian cyborg.
Office
Part of speech: noun
Definition: A building or room where clerical or professional duties are performed.A bureau, an administrative unit of government.A position of responsibility of some authority within an organisation.(‘good offices') Mediation or help in resolving a dispute.rite, ceremonial observance of social or religious naturereligious service, especially a liturgy officiated by a Christian priest or ministermajor administrative division, notably in certain governmental administrations, either at ministry level (e.g. the British Home Office) or within or dependent on such a departmenta task that one feels obliged to do
Example sentence: I weep for the liberty of my country when I see at this early day of its successful experiment that corruption has been imputed to many members of the House of Representatives, and the rights of the people have been bartered for promises of office.