Application: A program that creates a finished product such as a document, report, map, etc.
Utility: A program that does something in the background or supplements an application.
Backup: An application that backs up or copies hard drives.
Book: A book review.
Financial: An application having to do with money or your taxes.
Digital Photo: A program having to do with Digital Photography.
Digital Graphics: A program geared more towards art or graphics, but could also be used for photos.
Digital Media: A music or video program, or a program having to do with CDs or DVDs.