official vs officialdom

official and officialdom both are nouns.

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

official (noun)	officialdom (noun)
someone who administers the rules of a game or sport	people elected or appointed to administer a government
a worker who holds or is invested with an office

official (adjective)	officialdom (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