Thank you but, I'm sorry, I still can't see clearly.

When I open 'Account' from Word, it shows 'Microsoft Office Professional Plus 2016'.
And under 'Office Updates' it says 'Updates are automatically downloaded and installed'. When I click on 'Update now' it says 'You're up to date! The latest version of Office is installed on your computer.'

Is it not what it seems to be?
Do I actually run Office 2013 and get updates through the regular channel? For that I opt to 'Notify me but I choose when to install' and I don't install the updates to Office 2013 as to my best knowledge I run Office 2016.