gaudy vs meretricious

gaudy is a noun but meretricious is not a noun.

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

As adjectives, gaudy and meretricious are synonyms defined as:

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

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

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