Word Add-in

Hi, I recently found out you can code add-ins for Word (and other Office apps).

Looking through the documentation I could only find that add-ins work as sidepanes?

Here are the questions?

Is it possible to code an add-in that replicates the code suggestion window in code editors? You know, that window that appears above the cursor when you type.

And also, do the add-ins only work when the side pane is open?