No, that does clarify things. Being a graph database is a big difference; CouchDB is strictly document based. (Incidentally, you might want to checkout PouchD

No, that does clarify things. Being a graph database is a big difference; CouchDB is strictly document based. (Incidentally, you might want to checkout PouchDB, if you haven't already. It's a javascript implementation of CouchDB, and it runs quite well on Node, and can use LevelDB or any LevelDOWN compatible datastore, which makes it pretty useful as a lightweight embedded DB. Again though, documents only.)