flashiness vs loudness

flashiness and loudness both are nouns.

Word	Noun	Adjective	Verb	Adverb
flashiness	Yes	No	No	No
loudness	Yes	No	No	No

As nouns, flashiness and loudness are synonyms defined as:

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

flashiness (noun)	loudness (noun)
tasteless showiness	the magnitude of sound (usually in a specified direction)
	tasteless showiness