How can I convert pdf to word on mac?

I want to convert Word files to PDF format to keep my files safer. What should I do?

iPubsoft PDF to Word Converter can easily convert your PDF documents to .docx format.
More resources:
http://www.ipubsoft.com/pdf-to-word-converter-for-mac/how-to-convert-pdf-to-docx-on-mac.html

As I know, Coolmuster PDF to Word Converter for Mac is a useful software for you to convert your Word to PFD, you can have a try, it can give you a lot of help.
http://www.coolmuster.com/pdf/save-pdf-as-word-on-mac.html

Have you tried any software? I know a very good one and have used it many times. You can have a try--Vibosoft PDF to Word Converter for Mac.
read this you can get a detail information:
http://www.vibosoft.com/ebook/convert-pdf-to-word-mac-windows.html