prosperous vs roaring

prosperous is not a noun while roaring is a noun.

Word	Noun	Adjective	Verb	Adverb
prosperous	No	Yes	No	No
roaring	Yes	Yes	No	Yes

As adjectives, prosperous and roaring are synonyms defined as:

Other synonyms of prosperous include booming, burgeoning, flourishing, palmy, prospering, thriving.

prosperous (noun)	roaring (noun)
	a very loud utterance (like the sound of an animal)
	a deep prolonged loud noise

prosperous (adjective)	roaring (adjective)
marked by peace and prosperity	very lively and profitable
presaging or likely to bring good luck or a good outcome
in fortunate circumstances financially; moderately rich
very lively and profitable

prosperous (adverb)	roaring (adverb)
	extremely