tawdriness vs gaudiness

tawdriness and gaudiness both are nouns.

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

As nouns, tawdriness and gaudiness are synonyms defined as:

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

tawdriness (noun)	gaudiness (noun)
tasteless showiness	strident color or excessive ornamentation
	tasteless showiness