clavier vs harpsichord

clavier and harpsichord both are nouns.

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

As nouns, harpsichord is a hyponym of clavier; that is, harpsichord is a word with a more specific, narrower meaning than clavier:

clavier: a stringed instrument that has a keyboard
harpsichord: a clavier with strings that are plucked by plectra mounted on pivots

Other hyponyms of clavier include cembalo.

clavier (noun)	harpsichord (noun)
a bank of keys on a musical instrument	a clavier with strings that are plucked by plectra mounted on pivots
a stringed instrument that has a keyboard