dustrag vs duster

dustrag and duster both are nouns.

Word	Noun	Adjective	Verb	Adverb
dustrag	Yes	No	No	No
duster	Yes	No	No	No

As nouns, dustrag and duster are synonyms defined as:

Other synonyms of dustrag include dustcloth.

dustrag (noun)	duster (noun)
a piece of cloth used for dusting	a pitch thrown deliberately close to the batter
	a loose coverall (coat or frock) reaching down to the ankles
	a piece of cloth used for dusting
	a windstorm that lifts up clouds of dust or sand