music vs monophonic

music is a noun but monophonic is not a noun.

Word	Noun	Adjective	Verb	Adverb
music	Yes	No	No	No
monophonic	No	Yes	No	No

music (noun)	monophonic (noun)
musical activity (singing or whistling etc.)
punishment for one's actions
any agreeable (pleasing and harmonious) sounds
(music) the sounds produced by singers or musical instruments (or reproductions of such sounds)
an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner

music (adjective)	monophonic (adjective)
	consisting of a single melodic line
	designating sound transmission or recording or reproduction over a single channel