Tip: Select a short phrase that should be the SAME across the sentences. Then click “Find Selection”; matching sentences appear and Word scrolls to each when you click it. You can add your own custom sentences (e.g. copied from other documents) with Add/Remove Custom. Then click Compare for AI‑highlighted differences.
Select Text With Mouse → Find Selection → Tick Your Choices → (Optional) Add/Remove Custom Text → Compare Using AI
cribbler
cribbler even better!