gaudiness vs meretriciousness

gaudiness and meretriciousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaudiness	Yes	No	No	No
meretriciousness	Yes	No	No	No

As nouns, gaudiness and meretriciousness are synonyms defined as:

Other synonyms of gaudiness include brashness, flashiness, garishness, glitz, loudness, tawdriness.

gaudiness (noun)	meretriciousness (noun)
strident color or excessive ornamentation	an appearance of truth that is false or deceptive; seeming plausibility
tasteless showiness	tasteless showiness