The second option is actually the setting for your language preferences. The first option is for installing a local experience pack and it will take you to Microsoft Store to download and install the language of your choice.

Select Time & Language –> Language Add a preferred language to Windows 10.

Go to Windows Settings (Windows key + i).

Installing a language pack is very simple using Windows Settings.

Handwriting Install a new language using Windows 10 Settings.

The following features are available in the Windows 10 language packs: If you want to use Windows 10 in a specific language fully, you should download and install Windows 10 in that specific language. Some languages may only support a small set of text to be translated while the other text remains in the default language. Please note that not all language packs support all display items. This is useful for systems which are used by multiple users who prefer different languages. You can add multiple languages to Windows 10 and change the display language on the fly using the language toolbar. But from Windows 10, the language packs can be installed directly from Windows Settings free of cost.

Microsoft used to offer separate language packs for each supported language in earlier Windows versions e.g., Windows 8.1, Windows 7 and Windows XP.

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