meretricious vs gaudy

meretricious is not a noun while gaudy is a noun.

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

As adjectives, meretricious and gaudy are synonyms defined as:

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

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

meretricious (adjective)	gaudy (adjective)
like or relating to a prostitute	(used especially of clothes) marked by conspicuous display
based on pretense; deceptively pleasing	tastelessly showy
tastelessly showy