As a Mac user you know that when you open with Pages a document created with Office Word, you receive a warning that the fonts do not fit. That happens because you don't have the font family on Mac Microsoft Office For Mac - Pages, Numbers and other text editing applications.
"This Word document may look different."
Although fonts They were developed for the first time on OS X systems, by Steve Jobs, Microsoft has created and developed its own family for Microsoft Office suite.
As an OS X user, it often happens to meet files .doc and .docx which contain written text with other fonts than those installed on the system. In most cases, this is the fonts Calibri, Cambria, Consolas, Constantia and Corbel.
The best way to remove this problem is to install the family of fonts present in Microsoft Office, on OS X. So when we open a Word file with the Pages application, not to meet warning messages like: The font Calibri isn’t available on OS X. It was replaced with Times New Roman.
Microsoft Office font family for Mac
Download Microsoft Office Fonts for OS X Pages, Numbers, Keynotes. (link Microsoft)
The installation of the font is very simple. Dismiss the file downloaded above, then double-click on the font chosen for installation. The Fontbook application will automatically open to install your font on OS X.