garbage man vs dustman

garbage man and dustman both are nouns.

Word	Noun	Adjective	Verb	Adverb
garbage man	Yes	No	No	No
dustman	Yes	No	No	No

As nouns, garbage man and dustman are synonyms defined as:

garbage man and dustman: someone employed to collect and dispose of refuse

Other synonyms of garbage man include garbage carter, garbage collector, garbage hauler, garbageman, refuse collector.

garbage man (noun)	dustman (noun)
someone employed to collect and dispose of refuse	someone employed to collect and dispose of refuse