diff --git a/docs/reference/gio/overview.md b/docs/reference/gio/overview.md
index c913c5741..f75ea0439 100644
--- a/docs/reference/gio/overview.md
+++ b/docs/reference/gio/overview.md
@@ -33,10 +33,10 @@ base classes for I/O and files:
 : list files in directories
 
 [iface@Gio.Drive]
-: represents a drive
+: represents a drive, which may contain zero or more volumes
 
 [iface@Gio.Volume]
-: represents a file system in an abstract way
+: represents a file system, which may have a mount
 
 [iface@Gio.Mount]
 : represents a mounted file system
diff --git a/gio/gdrive.c b/gio/gdrive.c
index fbb86e5f0..27205b077 100644
--- a/gio/gdrive.c
+++ b/gio/gdrive.c
@@ -35,7 +35,7 @@
  *
  * `GDrive` represents a piece of hardware connected to the machine.
  * It’s generally only created for removable hardware or hardware with
- * removable media.
+ * removable media. For example, an optical disc drive, or a USB flash drive.
  *
  * `GDrive` is a container class for [iface@Gio.Volume] objects that stem from
  * the same piece of media. As such, `GDrive` abstracts a drive with
diff --git a/gio/gmount.c b/gio/gmount.c
index 9bd8a7d9a..866cc16aa 100644
--- a/gio/gmount.c
+++ b/gio/gmount.c
@@ -39,14 +39,15 @@
 /**
  * GMount:
  *
- * The `GMount` interface represents user-visible mounts. Note, when
- * [porting from GnomeVFS](migrating-gnome-vfs.html), `GMount` is the moral
- * equivalent of `GnomeVFSVolume`.
+ * The `GMount` interface represents a user-visible mount, such as a mounted
+ * file system.
  *
  * `GMount` is a ‘mounted’ filesystem that you can access. Mounted is in
  * quotes because it’s not the same as a UNIX mount, it might be a GVFS
- * mount, but you can still access the files on it if you use GIO. Might or
- * might not be related to a volume object.
+ * mount, but you can still access the files on it if you use GIO.
+ *
+ * A `GMount` might be associated with a [iface@Gio.Volume] (such as a USB flash
+ * drive) which hosts it.
  * 
  * Unmounting a `GMount` instance is an asynchronous operation. For
  * more information about asynchronous operations, see [iface@Gio.AsyncResult]
@@ -60,6 +61,9 @@
  * operation was completed successfully.  If an `error` is present when
  * [method@Gio.Mount.unmount_with_operation_finish] is called, then it will be
  * filled with any error information.
+ *
+ * Note, when [porting from GnomeVFS](migrating-gnome-vfs.html), `GMount` is the
+ * moral equivalent of `GnomeVFSVolume`.
  **/
 
 typedef GMountIface GMountInterface;
diff --git a/gio/gvolume.c b/gio/gvolume.c
index 6b809a6bc..2bd24313f 100644
--- a/gio/gvolume.c
+++ b/gio/gvolume.c
@@ -35,8 +35,11 @@
  * GVolume:
  * 
  * The `GVolume` interface represents user-visible objects that can be
- * mounted. Note, when [porting from GnomeVFS](migrating-gnome-vfs.html),
- * `GVolume` is the moral equivalent of `GnomeVFSDrive`.
+ * mounted. For example, a file system partition on a USB flash drive, or an
+ * optical disc inserted into a disc drive.
+ *
+ * If a `GVolume` is currently mounted, the corresponding [iface@Gio.Mount] can
+ * be retrieved using [method@Gio.Volume.get_mount].
  *
  * Mounting a `GVolume` instance is an asynchronous operation. For more
  * information about asynchronous operations, see [iface@Gio.AsyncResult] and
@@ -58,6 +61,9 @@
  * [method@Gio.Volume.mount_finish] is called, then it will be filled with any
  * error information.
  *
+ * Note, when [porting from GnomeVFS](migrating-gnome-vfs.html),
+ * `GVolume` is the moral equivalent of `GnomeVFSDrive`.
+ *
  * ## Volume Identifiers
  *
  * It is sometimes necessary to directly access the underlying