dustman vs garbage collector

dustman and garbage collector both are nouns.

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

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

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

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

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