gust vs bluster

gust and bluster both are nouns.

Word	Noun	Adjective	Verb	Adverb
gust	Yes	No	No	No
bluster	Yes	No	Yes	No

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

Other hyponyms of gust include sandblast, puff, puff of air, whiff.

gust (noun)	bluster (noun)
a strong current of air	a swaggering show of courage
	vain and empty boasting
	a violent gusty wind
	noisy confusion and turbulence

gust (verb)	bluster (verb)
	act in an arrogant, overly self-assured, or conceited manner
	show off
	blow hard; be gusty, as of wind