cembalo vs Klavier

cembalo and Klavier both are nouns.

Word	Noun	Adjective	Verb	Adverb
cembalo	Yes	No	No	No
Klavier	Yes	No	No	No

As nouns, Klavier is a hypernym of cembalo; that is, Klavier is a word with a broader meaning than cembalo:

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

Other hypernyms of cembalo include clavier.

cembalo (noun)	Klavier (noun)
a clavier with strings that are plucked by plectra mounted on pivots	a stringed instrument that has a keyboard