dust coat vs duster

dust coat and duster both are nouns.

Word	Noun	Adjective	Verb	Adverb
dust coat	Yes	No	No	No
duster	Yes	No	No	No

As nouns, dust coat and duster are synonyms defined as:

dust coat and duster: a loose coverall (coat or frock) reaching down to the ankles

Other synonyms of dust coat include gabardine, gaberdine, smock.

dust coat (noun)	duster (noun)
a loose coverall (coat or frock) reaching down to the ankles	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