Adobe Photoshop is a graphics editing program developed and published by Adobe Systems Incorporated. wikipedia.org

Adobe Photoshop Lightroom is a photo editing and management computer program developed by Adobe Systems for Windows and OS X, designed to assist users in managing large quantities of digital images and doing post production work. Lightroom combines photo management and editing in one interface. wikipedia.org

Photo manipulation is the application of image editing techniques to photographs in order to create an illusion or deception (in contrast to mere enhancement or correction), through analog or digital means. wikipedia.org

A microstock photography service sources images almost exclusively via the Internet from a wider range of photographers than traditional stock agencies (including non-professional photographers), and usually sells their images at a low rate (anywhere from $.20 - $10 for a royalty-free image). wikipedia.org

Image editing encompasses the processes of altering images, whether they be digital photographs, traditional analog photographs, or illustrations. wikipedia.org