commercial traveler vs traveling salesman

commercial traveler and traveling salesman both are nouns.

Word	Noun	Adjective	Verb	Adverb
commercial traveler	Yes	No	No	No
traveling salesman	Yes	No	No	No

As nouns, commercial traveler and traveling salesman are synonyms defined as:

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

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

commercial traveler (noun)	traveling salesman (noun)
a salesman who travels to call on customers	a salesman who travels to call on customers