MS Word has expanded its spell-check functionality (one of its most important features) to include several other useful features for proofreading and editing documents for clarity and style. The AI driven features provide suggestions for the user to incorporate, with an editor "score" to estimate overall completeness and clarity.
The following tutorial demonstrates how to access the Editor feature that will assist with proofing one's document. More information and a detailed list of features can be found on the Microsoft website page located here.