elevator man vs elevator boy

elevator man and elevator boy both are nouns.

Word	Noun	Adjective	Verb	Adverb
elevator man	Yes	No	No	No
elevator boy	Yes	No	No	No

As nouns, elevator man and elevator boy are synonyms defined as:

Other synonyms of elevator man include liftman.

elevator man (noun)	elevator boy (noun)
a man employed to operate an elevator	a man employed to operate an elevator