roadman vs commercial traveler

roadman and commercial traveler both are nouns.

Word	Noun	Adjective	Verb	Adverb
roadman	Yes	No	No	No
commercial traveler	Yes	No	No	No

As nouns, roadman and commercial traveler are synonyms defined as:

roadman and commercial traveler: a salesman who travels to call on customers

Other synonyms of roadman include bagman, commercial traveller, traveling salesman, travelling salesman.

roadman (noun)	commercial traveler (noun)
a salesman who travels to call on customers	a salesman who travels to call on customers
a workman who is employed to repair roads