garbageman vs garbage man

garbageman and garbage man both are nouns.

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

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

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

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

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