clarion vs loud

clarion is a noun but loud is not a noun.

Word	Noun	Adjective	Verb	Adverb
clarion	Yes	Yes	Yes	No
loud	No	Yes	No	Yes

clarion (noun)	loud (noun)
a medieval brass instrument with a clear shrill tone

clarion (adjective)	loud (adjective)
loud and clear	characterized by or producing sound of great volume or intensity
	(used chiefly as a direction or description in music) indicating that said piece or segment should be played loudly
	tastelessly showy

clarion (verb)	loud (verb)
proclaim on, or as if on, a clarion
blow the clarion

clarion (adverb)	loud (adverb)
	with relatively high volume