ticket taker vs porter

ticket taker and porter both are nouns.

Word	Noun	Adjective	Verb	Adverb
ticket taker	Yes	No	No	No
porter	Yes	No	Yes	No

As nouns, porter is a hypernym of ticket taker; that is, porter is a word with a broader meaning than ticket taker:

ticket taker: someone who is paid to admit only those who have purchased tickets
porter: someone who guards an entrance

Other hypernyms of ticket taker include door guard, doorkeeper, doorman, gatekeeper, hall porter, ostiary.

ticket taker (noun)	porter (noun)
someone who is paid to admit only those who have purchased tickets	a very dark sweet ale brewed from roasted unmalted barley
	a person employed to carry luggage and supplies
	a railroad employee who assists passengers (especially on sleeping cars)
	someone who guards an entrance

ticket taker (verb)	porter (verb)
	carry luggage or supplies