I will admit that this is a hard question to answer. I have played cello for 45 years and bassoon for 40, and never have been involved in a contest of "which can play louder". Generally, musicians work to make instruments play well together, and both the bassoon and cello have a wide dynamic range, allowing them to play well together. During the Baroque and Classical periods, much music was written for a cello and bassoon to play together.
I suppose, since the question has been raised, that a conclusion might be drawn from the orchestra: the modern orchestra usually has 2 or 3 bassoons, but 6 to 12 'cellists. From this, one might decide that bassoons are louder than cellos (it takes 12 cellos to equal 3 bassoons, so one bassoon must be worth 4 cellos) but I suspect that this answer is dubious, at best.
Additionally, I have known bassoonists who can play very loud, for long periods of time, and others who are quite gentle in tone and volume. Likewise, there are many cellos built for symphony orchestra and solo use which are quite powerful, but also many which are cultivated for their soft, gentle, soothing tone.
So my vote would be that the bassoon and cello are about equally capable of making loudness happen.
quieter
Cello, short for violoncello.
The bassoon is a musical instrument in the woodwind family. It is the lowest, or bass, voice in the woodwind choir. It often duplicates the cello voice in orchestral compositions.
Cello bass clarinet oboe bassoon
Instruments are Bassoon,Trombone,Cello,Double Bass
Violin, viola, cello, bass, flue, oboe, Clarinet, bassoon, horn, Trumpet, Trombone, tuba, timpani, percussion.
The Bass Clarinet, Trumbone, Tuba, Cello, Bassoon, and others have a low pitch. Just to list a few.
Several instruments make use of both bass and tenor clefs. The most common ones I can think of presently are the cello and the bassoon. Much of the time, music is written in bass clef, but can change when the passage to be played moves up to a higher register where tenor clef would be appropriate.
tuba french horn and that's all i know sorry if im wrong cello, bassoon
Matt Doran has written: 'Andante and allegro, for flute, 'cello and piano' -- subject(s): Trios (Piano, flute, violoncello) 'Prelude & scherzo [for] oboe, clarinet, bassoon & viola' -- subject(s): Quartets (Bassoon, clarinet, oboe, viola)
Basso Continuo consists of a keyboard improvising/filling in harmonies, often a harpsichord or cembalo or organ and a bass instrument, usually cello, but could also be a bassoon.
Strings: violin, viola, cello, bass Woodwinds: flute, oboe, clarinet, bassoon Brass: Trumpet, trombone, french horn, tuba