A family of Microsoft word processing software products for creating web, email, and print documents.
Since language is a text property in Word, you will have to fix this for affected documents as follows: Select all the text in the document, for example by pressing Ctrl+A. Click Review | Language | Set Proofing Language to display the Language dialog box. Choose the desired language and click OK (that is, do not click Set as Default, because the default language is already correct on your system).