What is an "application?"
Answer: A computer application is the same thing as a computer program. The term "program" makes a little more sense, but hey, using the term "application" can make you sound more sophisticated. And that's what we all want after all.
Actually, the term "application" is typically used when referring to programs on Macintosh computers. While the Windows platform has a "Programs" folder for programs, the Mac OS has an "Applications" folder. So I guess the Mac isn't the most intuitive platform in every aspect. =)