ostentation vs fanfare

ostentation and fanfare both are nouns.

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

As nouns, ostentation and fanfare are synonyms defined as:

Other synonyms of ostentation include flash.

ostentation (noun)	fanfare (noun)
pretentious or showy or vulgar display	a gaudy outward display
lack of elegance as a consequence of being pompous and puffed up with vanity	(music) a short lively tune played on brass instruments
a gaudy outward display