timpani vs kettledrum

timpani and kettledrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
timpani	Yes	No	No	No
kettledrum	Yes	No	No	No

As nouns, timpani and kettledrum are synonyms defined as:

timpani and kettledrum: a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it

Other synonyms of timpani include kettle, tympani, tympanum.

timpani (noun)	kettledrum (noun)
a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it	a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it