fingerboard vs guidepost

fingerboard and guidepost both are nouns.

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

As nouns, guidepost is a hypernym of fingerboard; that is, guidepost is a word with a broader meaning than fingerboard:

Other hypernyms of fingerboard include signpost.

fingerboard (noun)	guidepost (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 rule or principle that provides guidance to appropriate behavior
a bank of keys on a musical instrument	a post bearing a sign that gives directions or shows the way
a guidepost resembling a hand with a pointing index finger