What is the difference between Microsoft Office 2021 and 2021 Pro Plus?

The main difference between Microsoft Office 2021 and Microsoft Office 2021 Professional Plus lies in the included applications. Microsoft Office 2021 includes the core applications such as Word, Excel, PowerPoint, and Outlook. Microsoft Office 2021 Professional Plus, on the other hand, includes additional applications such as Access, Publisher, OneNote, and Teams, making it a more comprehensive suite for professional use.