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

A flyer or flier, also called a circular, handbill or leaflet, is a form of paper advertisement intended for wide distribution and typically posted or distributed in public place. wikipedia.org

Vector graphics is the use of polygons to represent images in computer graphics. wikipedia.org

A poster is any piece of printed paper designed to be attached to a wall or vertical surface. Typically posters include both textual and graphic elements, although a poster may be either wholly graphical or wholly text.

Print design is the process of creating and formatting projects using layout software that is ready to be printed by the end user. It is especially helpful when multiple persons or agencies are working on the same project. wikipedia.org

CorelDRAW is a vector graphics editor developed and marketed by Corel Corporation of Ottawa, Canada. It is also the name of Corel's Graphics Suite, which bundles CorelDraw with a bitmap image editor, Corel PhotoPaint, and other graphics-related programs. wikipedia.org