Joe,
You can run the ListCommands command (no, I'm not stuttering)
by opening the Macros dialog (ALT+F8), choosing Word Commands
in the 'Macros In' box, and scrolling to ListCommands in the
macro list. This produces a profoundly space-wasting table
which nevertheless does show all the shortcuts.
Of course, a true Word geek makes his own damn shortcuts to
suit his specific preferences, and does it so thoroughly that
he often retains no recollection at all of the original hotkey
assignments, ahem.
You can set a zoom at any percentage, but to tie it to a
shortcut you'd have to put it in a little macro:
Sub ZoomTo120
ActiveWindow.ActivePane.View.Zoom.Percentage = 120
End Sub