A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Karen,
It is happening because a some point you or another user on your computer told Windows that you want to open all pdf files using Word.
In Windows you can right-click on a .pdf file and pick Open With...
Go to Choose another app (even if Acrobat Reader or another pdf reader is showing in the menu.
Pick the one you want to be using routinely and then click on Always.