accordion vs fingerboard

accordion and fingerboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
accordion	Yes	No	No	No
fingerboard	Yes	No	No	No

accordion (noun)	fingerboard (noun)
a portable box-shaped free-reed instrument; the reeds are made to vibrate by air from the bellows controlled by the player	a narrow strip of wood on the neck of some stringed instruments (violin or cello or guitar etc) where the strings are held against the wood with the fingers
	a bank of keys on a musical instrument
	a guidepost resembling a hand with a pointing index finger