ostentation vs bravado

ostentation and bravado both are nouns.

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

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

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

ostentation (noun)	bravado (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
a gaudy outward display