official vs functionary

official and functionary both are nouns.

Word	Noun	Adjective	Verb	Adverb
official	Yes	Yes	No	No
functionary	Yes	No	No	No

As nouns, official and functionary are synonyms defined as:

official and functionary: a worker who holds or is invested with an office

official (noun)	functionary (noun)
someone who administers the rules of a game or sport	a worker who holds or is invested with an office
a worker who holds or is invested with an office

official (adjective)	functionary (adjective)
having official authority or sanction
of or relating to an office
verified officially
(of a church) given official status as a national or state institution
conforming to set usage, procedure, or discipline