doorkeeper vs functionary

doorkeeper and functionary both are nouns.

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

As nouns, functionary is a hypernym of doorkeeper; that is, functionary is a word with a broader meaning than doorkeeper:

doorkeeper: an official stationed at the entrance of a courtroom or legislative chamber
functionary: a worker who holds or is invested with an office

Other hypernyms of doorkeeper include official.

doorkeeper (noun)	functionary (noun)
someone who guards an entrance	a worker who holds or is invested with an office
an official stationed at the entrance of a courtroom or legislative chamber
the lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church