windstorm vs cyclone

windstorm and cyclone both are nouns.

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

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

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

windstorm (noun)	cyclone (noun)
a storm consisting of violent winds	a violent rotating windstorm
	(meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the Northern Hemisphere and clockwise in the southern