(uncountable) Power or right to make or enforce rules or give orders; or a position having such power or right.

(plural) Persons, regarded collectively, who occupy official positions of power; police or law enforcement.

(countable) A reliable, definitive source of information on a subject.

(uncountable) Status as a trustworthy source of information, reputation for mastery or expertise; or claim to such status or reputation.

(uncountable) Official permission; authorisation to act in some capacity on behalf of a ruling entity.

(countable) A government-owned agency that runs a revenue-generating activity for public benefit.