Word
Set the dictionary language
1.Select the text you want to check.
2.On the Review tab, in the Proofing group, click Set Language Button image.
3.In the Language dialog box, verify that the correct language is associated with the text. If it is not, select the language you want to use for the dictionary and other proofing tools.
If the language is preceded by the Spelling & Grammar iconButton image , it means that proofing tools, such as spelling checker, are installed for that language. If the language is not preceded by the Spelling & Grammar iconButton image , the dictionary for that language is not available and you cannot check the spelling and grammar for that language.
4.Complete steps 1-3 for each section of text that you want to check.
MS Language Proofing Link