gatekeeper vs doorkeeper

gatekeeper and doorkeeper both are nouns.

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

As nouns, gatekeeper and doorkeeper are synonyms defined as:

Other synonyms of gatekeeper include door guard, doorman, hall porter, ostiary, porter.

gatekeeper (noun)	doorkeeper (noun)
someone who guards an entrance	someone who guards an entrance
someone who controls access to something	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