Uninstall button. deletes the app and all of its data and
Disable button. Prevents the app from running, but does not
uninstall it. This option is available for some apps and servic-
es that can't be uninstalled.
Clear data button. delete an app's settings and other data
without removing the app itself.
Clear cache button. if the app stores data in a temporary area
of the tablet's memory, lists how much information is stored,
and includes a button for clearing it.
Launch by default. If you have configured an app to launch cer-
tain file types by default, you can clear that setting here.
Permissions. Lists the kinds of information about your tablet
and data the app has access to.
Nexus 7 Guidebook