applaud vs bravo

applaud is not a noun while bravo is a noun.

Word	Noun	Adjective	Verb	Adverb
applaud	No	No	Yes	No
bravo	Yes	No	Yes	No

As verbs, bravo is a hyponym of applaud; that is, bravo is a word with a more specific, narrower meaning than applaud:

applaud (noun)	bravo (noun)
	a cry of approval as from an audience at the end of great performance
	a murderer (especially one who kills a prominent political figure) who kills by a surprise attack and often is hired to do the deed

applaud (verb)	bravo (verb)
express that something is worthy of praise	applaud with shouts of `bravo' or `brava'
clap one's hands or shout after performances to indicate approval