Pullman porter vs porter

Pullman porter and porter both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pullman porter	Yes	No	No	No
porter	Yes	No	Yes	No

As nouns, Pullman porter and porter are synonyms defined as:

Pullman porter and porter: a railroad employee who assists passengers (especially on sleeping cars)

Pullman porter (noun)	porter (noun)
a railroad employee who assists passengers (especially on sleeping cars)	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

Pullman porter (verb)	porter (verb)
	carry luggage or supplies