Company Store, Support Desk, Training Calendar, Phone List, and Library Check-Out are the only applications that have their own Language table in the database. If you're not looking to change one of these applications, the language will be controlled by the two global tables GlobalLanguage and AlternateLanguage.
Changing anything in global language or alternate language tables will change the language for the entire site. Make certain the changes you want in these fields are acceptable on a site wide basis.
In the Language table for the application you want to alter, you can search for the term(s) you wish to alter by pressing Ctrl-F and searching for the specific wording. Once you find it, you can edit it. In SQL Management Studio, you can write a query to alter the wording or you can right click the table name and select ‘edit top 200 rows’ and edit in-line. To save, when editing in-line, simply tab to the next field.
Changing the language for a specific application will change the language for all the clones for that application as well.
Currently, the files can be changed: