Localization and internationalization, what's the difference?

Question

I was going to ask a question about preparing a desktop application to support multiple languages on the UI.

In my search for existing questions on the topic I was

Answer 1

Lot of answers, lot of correct information, but my answer is little bit another point of view.

Internationalization - it is when developer does not have in code direct messages/error messages/buttons names/labels captions/etc in certain language but have a key which is passed to translation function, and translation function according to current user's locale will return final text in english/france/etc...
Translation function works with storage (db/files/associative array/etc).
Storage contains keys which is ussed in coode, and values, which is texts in certain language which application supports.

Localization - it is process of adding new values in new language (for example spain) appropriate to keys into storage without involving developer in this process.

For example, we have storage:

key   | english    | italian           |
------+------------+-------------------+
title | Welcome    | Benvenuto         |
agree | I agree    | Sono d'accordo    |
thank | Thank you  | Grazie            |

Internationalization it is using in code something like confirm(t(agree)); instead of confirm("I agree"); or confirm("Sono d'accordo");
Localization - it is add new locale to our storage, like:

key   | english    | italian           | spanish          |
------+------------+-------------------+------------------+
title | Welcome    | Benvenuto         | Bienvenido       |
agree | I agree    | Sono d'accordo    | Estoy de acuerdo |
thank | Thank you  | Grazie            | Gracias          |

and here developer don't need update code, translation function will correctly carry appropriate texts.