Bucket definition is very restricted

http://developer.couchbase.com/documentation/server/current/architecture/core-data-access-buckets.html defines bucket as:

Buckets are logical groups of items (keys and values) which can be used to organize, manage, and analyze the group of items.

This is a very limited and implementation-specific definition. A user coming here to learn about JSON documents will be lost.

Also, why Buckets are defined under MDS section. This should be up-leveled.