Difference between Official and Authoritative

OFFICIAL vs AUTHORITATIVE: NOUN

A referee or umpire.
One who holds an office or position, especially one who acts in a subordinate capacity for an institution such as a corporation or governmental agency.
A person responsible for applying the rules of a game or sport in a competition.
An office holder invested with powers and authorities.
One who is invested with an office of a public nature; one holding a civil appointment: as, a government official; a railway official.
In English ecclesiastical law, a person appointed as judge by a bishop, chapter, or archdeacon, to hear causes in the ecclesiastical courts.
A worker who holds or is invested with an office
Someone who administers the rules of a game or sport
One who holds an office; esp., a subordinate executive officer or attendant.
An ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction.

Of or pertaining to an office or public trust.
Authorized by or contained in the US Pharmacopoeia or National Formulary. Used of drugs.
Characteristic of or befitting a person of authority; formal.
Holding office or serving in a public capacity.
Approved by authority; sanctioned by the pharmacopœia; appointed to be used in medicine. Cf. Officinal.
Of or relating to an office or a post of authority.
Of or relating to an office
Conforming to set usage, procedure, or discipline
(of a church) given official status as a national or state institution
Verified officially
Authorized by a proper authority; authoritative.
Having official authority or sanction
Sanctioned by the pharmacopoeia; appointed to be used in medicine; officinal
Approved by authority; authorized.
Discharging an office or function.

Highly accurate or definitive; treated or worthy of treatment as a scholarly authority
Arising or originating from a figure of authority
Having, or proceeding from, due authority; entitled to obedience, credit, or acceptance; determinate; commanding.
Demonstrating authority; commanding.
Of acknowledged accuracy or excellence; highly reliable.
Having or arising from authority; official.
Of recognized authority or excellence
Having authority or ascendancy or influence
Sanctioned by established authority
Having a commanding style.

Performing duties or offices; rendering useful service; ministering.
Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority; hence, authorized: as, an official statement or report.
Of or pertaining to office or the performance of the duties of an office: as, official duty; official cares or responsibility.
In pharm., authorized by the pharmacopœia of some country or countries: as, an official drug; an official preparation. In this sense recent, displacing the broader term officinal.

Synonyms Authoritative, Magisterial, etc. (see magisterial), commanding.
Having an air of authority; positive; peremptory; dictatorial.
Having due authority; having the sanction or weight of authority; entitled to credence or obedience: as, “authoritative teaching,” Barrow.

Staffer, Unofficial, Spokesman, Offical, Prescribed, Established, Regular, Ex officio, Authoritative, Formalized, Authorized, Formal, Semiofficial, Confirmed, Functionary

Relevant, Reputable, Credible, Respected, Trusted, Trustworthy, Accurate, Reliable, Authorized, Standard, Official, Classical, Important, Influential, Definitive

Staffer, Unofficial, Spokesman, Offical, Prescribed, Established, Regular, Ex officio, Authoritative, Formalized, Authorized, Formal, Semiofficial, Confirmed, Functionary

Relevant, Reputable, Credible, Respected, Trusted, Trustworthy, Accurate, Reliable, Authorized, Standard, Official, Classical, Important, Influential, Definitive

Any or all data that does not match the official record or official list of inmates should be considered inaccurate.
Applicants who earned a GED must present official GED results and official transcripts or any partial high school completion.
One copy will need to be an official university transcript translated into English by an official translation agency.
Are test scores listed on an official high school transcript counted as official test results?
The notary public shall authenticate with the official seal all official acts.
Official Map Article IV of the MPC enables municipalities to prepare an official map.
Textbooks, official reports, academic articles, essays, business letters, contracts, official speeches.
Department designated by the Building Official as an Electrical Official.
In other countries, official government translators issue official translations.
Every applicant must submit official transcripts with the school seal stamp and official signature sent directly by a school official.

No authoritative, comprehensive list exists of designated NSSEs.
AUTHORITATIVE FORCE OF JUDICIAL DECISIONS IN OTHER STATES.
Texas from reliable and authoritative providers of information.
Defines if an Item is deprecated or authoritative.
Congress and authoritative interpretation by the Supreme Court.
If the expert does not recognize the author of the published treatise to be authoritative, then the court may recognize the treatise as authoritative.
Are to comply with the guidance as though they are authoritative if no authoritative guidance exists in the area.
It came to mean an authoritative standard, and so the canon of Scripture is the collection of writings that are divinely authoritative.
Activity Authoritative Reference: Location of authoritative FM Standard Reference that supports the activity.
Our methodology works its way down from the most authoritative sources to the least authoritative sources.