Right click on the file, scroll down the pop up menu and select open with and click on Word. If not encrypted, you should get a pop up that says Word will open/convert your file. Just click ok. This SHOULD work.
The default language and document size should be what you have selected in Word. That's it, now you have your own Word files! After you have done the encryption and have them all ready to import into another Word document, you may want to copy the .docx to a folder. If you want the file to be able to be copied, select “File” > “Copy Document”.