windstorm vs duster

windstorm and duster both are nouns.

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

As nouns, duster is a hyponym of windstorm; that is, duster is a word with a more specific, narrower meaning than windstorm:

Other hyponyms of windstorm include cyclone, dust storm, sandstorm, sirocco, tempest, whirlwind.

windstorm (noun)	duster (noun)
a storm consisting of violent winds	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