fingerboard vs clavier

fingerboard and clavier both are nouns.

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

As nouns, fingerboard and clavier are synonyms defined as:

Other synonyms of fingerboard include piano keyboard.

fingerboard (noun)	clavier (noun)
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 bank of keys on a musical instrument	a stringed instrument that has a keyboard
a guidepost resembling a hand with a pointing index finger