tawdry vs gaudy

tawdry is not a noun while gaudy is a noun.

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

As adjectives, tawdry and gaudy are synonyms defined as:

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

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

tawdry (adjective)	gaudy (adjective)
made of inferior workmanship and materials	(used especially of clothes) marked by conspicuous display
tastelessly showy	tastelessly showy