The word 'bravura' is a noun, which functions as the subject of a sentence or a clause, and as the objectof a verb or a preposition.
The noun 'bravura' is a word for great technical skill and brilliance in an activity; or great enthusiasm and confidence; a word for a thing.
Examples:
His bravura is admired by many of his peers. (subject of the sentence)
She is known for the bravura of her performances. (object of the preposition 'for')