gaudy vs brassy

gaudy is a noun but brassy is not a noun.

Word	Noun	Adjective	Verb	Adverb
gaudy	Yes	Yes	No	No
brassy	No	Yes	No	No

As adjectives, gaudy and brassy are synonyms defined as:

Other synonyms of gaudy include cheap, flash, flashy, garish, gimcrack, loud, meretricious, tacky, tatty, tawdry, trashy.

gaudy (noun)	brassy (noun)
(Britain) a celebratory reunion feast or entertainment held at a college

gaudy (adjective)	brassy (adjective)
(used especially of clothes) marked by conspicuous display	resembling the sound of a brass instrument
tastelessly showy	tastelessly showy
	unrestrained by convention or propriety