sightreader vs music

sightreader and music both are nouns.

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

sightreader (noun)	music (noun)
a performer who reads without preparation or prior acquaintance (as in music)	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