diff --git a/src/databases/documents.js b/src/databases/documents.js
index 5a98044..bd3d635 100644
--- a/src/databases/documents.js
+++ b/src/databases/documents.js
@@ -15,6 +15,8 @@
  * const options = { indexBy: 'myCustomId'}
  * const Partial = Documents(options)
  * const documents = await Partial({ ipfs })
+ *
+ * @augments module:Databases~Database
  */
 import Database from '../database.js'
 
@@ -23,7 +25,7 @@ const DefaultOptions = { indexBy: '_id' }
 /**
  * Defines a Documents database.
  * @param {Object} options Various options for configuring the Document store.
- * @param {string} [params.indexBy=_id] An index.
+ * @param {string} [options.indexBy=_id] An index.
  * @return {module:Databases.Databases-Documents} A Documents function.
  * @memberof module:Databases
  */
@@ -86,7 +88,7 @@ const Documents = ({ indexBy } = DefaultOptions) => async ({ ipfs, identity, add
    *
    * The findFn function's signature takes the form `function(doc)` where doc
    * is a document's value property. The function should return true if the
-   * document is found, false otherwise.
+   * document should be included in the results, false otherwise.
    * @return {Array} Found documents.
    * @memberof module:Databases.Databases-Documents
    * @instance
diff --git a/src/databases/events.js b/src/databases/events.js
index 6d05a96..cd1bcc5 100644
--- a/src/databases/events.js
+++ b/src/databases/events.js
@@ -1,7 +1,10 @@
 /**
  * @namespace Databases-Events
  * @memberof module:Databases
- * @description Events database.
+ * @description
+ * Events database is an immutable, append-only event log database.
+ *
+ * @augments module:Databases~Database
  */
 import Database from '../database.js'
 
diff --git a/src/databases/keyvalue-indexed.js b/src/databases/keyvalue-indexed.js
index e230dd3..8eac4fa 100644
--- a/src/databases/keyvalue-indexed.js
+++ b/src/databases/keyvalue-indexed.js
@@ -2,9 +2,9 @@
  * @namespace Databases-KeyValueIndexed
  * @memberof module:Databases
  * @description
- * KeyValueIndexed database.
+ * Key-Value database that uses an index in order to provide fast queries.
  *
- * Key/value pairs are stored to the configured storage.
+ * Key-value pairs are stored to the configured storage.
  * @example <caption>Specify a custom storage</caption>
  * import { create } from 'IPFS'
  *
@@ -12,6 +12,9 @@
  * const storage = await IPFSBlockStorage()
  * const Partial = KeyValueIndexed({ storage })
  * const keyValueIndexed = await Partial({ ipfs })
+ *
+ * @augments module:Databases~Database
+ * @augments module:Databases.Databases-KeyValue
  */
 import KeyValue from './keyvalue.js'
 import LevelStorage from '../storage/level.js'
@@ -21,8 +24,6 @@ const valueEncoding = 'json'
 
 /**
  * Defines a KeyValueIndexed database.
- * @param {Object} options Various options for configuring the KeyValueIndexed
- * store.
  * @param {module:Storage} [storage=LevelStorage] A compatible storage where
  * the key/value pairs are indexed.
  * @return {module:Databases.Databases-KeyValueIndexed} A KeyValueIndexed
diff --git a/src/databases/keyvalue.js b/src/databases/keyvalue.js
index c03d880..ae85bbd 100644
--- a/src/databases/keyvalue.js
+++ b/src/databases/keyvalue.js
@@ -1,7 +1,10 @@
 /**
  * @namespace Databases-KeyValue
  * @memberof module:Databases
- * @description KeyValue database.
+ * @description
+ * Key-Value database.
+ *
+ * @augments module:Databases~Database
  */
 import Database from '../database.js'