Re: Office 2016 - Mac updates
They're Full installers. Whole thing as on the original (maybe) DVDs.
Patching an existing install on a Mac is apparently "ungodly difficult"*, so all updates have to be a complete, full reinstall of the whole thing.
* At least, I cannot find any way to do it. If you, the reader know how, please tell! I really want to do it but it seems impossible.