piano keyboard vs fingerboard

piano keyboard and fingerboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
piano keyboard	Yes	No	No	No
fingerboard	Yes	No	No	No

As nouns, piano keyboard and fingerboard are synonyms defined as:

Other synonyms of piano keyboard include clavier.

piano keyboard (noun)	fingerboard (noun)
a bank of keys on a musical instrument	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