Can be useful if you are multilingual
How to Change the Language in Microsoft Word Back to English
Want to convert Microsoft Word from English to another language? This tutorial shows you how to do it in the Word desktop app and the free online version on Office for the web.
By default, Microsoft Word matches its display and editing languages to your computer's system language. However, in Word for Windows, you can easily have multiple languages available.
If you're using Word for macOS or Word Online, you can still change display and editing languages, though the process isn't as simple and convenient as it is on the PC.