sounding board vs music

sounding board and music both are nouns.

Word	Noun	Adjective	Verb	Adverb
sounding board	Yes	No	No	No
music	Yes	No	No	No

sounding board (noun)	music (noun)
(music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrument	musical activity (singing or whistling etc.)
a person whose reactions to something serve as an indication of its acceptability	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