What is the difference between System Language and Content Language?

Let us start with the definition:

• System language refers to default language of the device you are using, which Gametize then used to display platform keywords such as the call-to-action buttons (e.g. “continue”, “do it”, etc). Players can freely change the system language - learn about the supported languages on web and app. 
• Content language refers to the language the Admins have created the content in. You can see them in places such as Project, Topic, and Challenge title and description. Players cannot freely change the language for this. 

Therefore, there can be a scenario where the system language (chosen by the Player) and the content language (input by the Admins) differ.

Take for example the screenshot below - the content language (demonstrated as Challenge Title) is in English, but the system language (demonstrated as the “do it” button and the various prompts) is being displayed in Simplified Chinese.