Couchbase and CouchDB have similar name but both databases are quite different. A slightly dated comparison of CouchDB vs Couchbase is at https://www.couchbase.

Couchbase and CouchDB have similar name but both databases are quite different. A slightly dated comparison of CouchDB vs Couchbase is at https://www.couchbase.com/couchbase-vs-couchdb https://www.couchbase.com/couchbase-vs-couchdb. We are in the process of getting that updated.