brassy vs brass

brassy is not a noun while brass is a noun.

Word	Noun	Adjective	Verb	Adverb
brassy	No	Yes	No	No
brass	Yes	No	No	No

brassy (noun)	brass (noun)
	a wind instrument that consists of a brass tube (usually of variable length) that is blown by means of a cup-shaped or funnel-shaped mouthpiece
	a memorial made of brass
	an ornament or utensil made of brass
	impudent aggressiveness
	the persons (or committees or departments etc.) who make up a body for the purpose of administering something
	the section of a band or orchestra that plays brass instruments
	an alloy of copper and zinc

brassy (adjective)	brass (adjective)
resembling the sound of a brass instrument
tastelessly showy
unrestrained by convention or propriety