plural of authority

The bodies that have political or administrative power and control in a particular sphere / The bodies that enforce law and order or provide a public service

plural of author

simple past tense and past participle of authorize

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

The originator or creator of a work, especially of a literary composition. / Someone who writes books for a living. / (obsolete, criminal law) Principal.

(chiefly US, sometimes proscribed) To create a work as its author.

(transitive) To grant (someone) the permission or power necessary to do (something). / (transitive) To permit (something), to sanction or consent to (something).

(uncountable) Permission. / (countable) An act of authorizing. / (countable) (A document giving) formal sanction, permission or warrant.

simple past tense and past participle of author