grandiosity vs flourish

grandiosity and flourish both are nouns.

Word	Noun	Adjective	Verb	Adverb
grandiosity	Yes	No	No	No
flourish	Yes	No	Yes	No

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

Other hyponyms of grandiosity include blah, bombast, claptrap, fustian, rant.

grandiosity (noun)	flourish (noun)
high-flown style; excessive use of verbal ornamentation	the act of waving
	a display of ornamental speech or language
	a showy gesture
	(music) a short lively tune played on brass instruments
	an ornamental embellishment in writing

grandiosity (verb)	flourish (verb)
	grow vigorously
	move or swing back and forth
	make steady progress; be at the high point in one's career or reach a high point in historical significance or importance