Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. In 1991, Adobe Systems co-founder John Warnock outlined a system called "Camelot" that evolved into PDF. While Adobe Systems made the PDF specification available free of charge in 1993, PDF was a proprietary format, controlled by Adobe, until it was officially released as an open standard on July 1, 2008, and published by the International Organization for Standardization as ISO 32000-1:2008, at which time control of the specification passed to an ISO Committee of volunteer industry experts.
Microsoft Word is a software intended for word processing. It was created by Microsoft, and now comes built into the Microsoft Office suite. It was originally developed by Richard Brodie for IBM PC under DOS in subsequent 1983.Versiones were scheduled for many other platforms including IBM PCs running MS-DOS (1983). It is a component of the Microsoft Office suite; also sold separately and included in Microsoft Works Suite. The current versions are Microsoft Office Word 2013 for Windows and Microsoft Office Word 2011 for Mac. It has become the most popular text processor world.