hall porter vs doorman

hall porter and doorman both are nouns.

Word	Noun	Adjective	Verb	Adverb
hall porter	Yes	No	No	No
doorman	Yes	No	No	No

As nouns, hall porter and doorman are synonyms defined as:

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

hall porter (noun)	doorman (noun)
someone who guards an entrance	someone who guards an entrance