ostentation vs bluster

ostentation and bluster both are nouns.

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

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

Other hyponyms of ostentation include bravado, exhibitionism, ritz, splurge, pedantry.

ostentation (noun)	bluster (noun)
pretentious or showy or vulgar display	a swaggering show of courage
lack of elegance as a consequence of being pompous and puffed up with vanity	vain and empty boasting
a gaudy outward display	a violent gusty wind
	noisy confusion and turbulence

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