contrabassoon vs contrafagotto

contrabassoon and contrafagotto both are nouns.

Word	Noun	Adjective	Verb	Adverb
contrabassoon	Yes	No	No	No
contrafagotto	Yes	No	No	No

As nouns, contrabassoon and contrafagotto are synonyms defined as:

contrabassoon and contrafagotto: the bassoon that is the largest instrument in the oboe family

Other synonyms of contrabassoon include double bassoon.

contrabassoon (noun)	contrafagotto (noun)
the bassoon that is the largest instrument in the oboe family	the bassoon that is the largest instrument in the oboe family