How do I set my default Word program on a Mac?

I have a Mac and have installed parallel Windows operating system to use Publisher for my job. I use Word within Mac OS for word processing, but now when I click on a document icon (within Mac OS) it automatically initiates the parallel Windows operating system to open the Word document inside Windows, when I just want to open it using Word inside Mac OS. How do I reset my default Word program to the Word for Mac within Mac OS?