Subluxation: Partial dislocation of a joint. A complete dislocation is a luxation.
The largest number of items per content database that has been tested on SharePoint Server 2013 is 60 million items, including documents and list items. If you plan to store more than 60 million items in SharePoint Server 2013, you must deploy multiple content databases.
SharePoint list is way to store your list either in the data form or document file with the help of SharePoint Tools. You can easily access those list from SharePoint whenever you desire of. By doing this, it saves time and money of organization.