I'm curious as to why your system says "Microsoft Word (2)". Is that indicating that you have Word open twice? Or is that a Windows 11 thing?

That should be the Application plus any processes started by Word.
With just one document open, I have a subprocess for the document and another named "Artificial Intelligence(AI) Host for the Microsoft(R) Windows(R) Operating System and Platformx64."

Well, I'll be... mine does the same thing. I never noticed, because it's not usually Word that sends me to the task manager; it's usually Excel and then because I usually have several workbooks open. I was having weird lags for a while, then realized that the coworker who just retired had kept all of her files in Excel 97-2002 format so my system was converting them upon opening.