Design
Design is the creation of a plan or convention for the construction of an object, system or measurable human interaction (as in architectural blueprints, engineering drawings, business processes, circuit diagrams, and sewing patterns). Design has different connotations in different fields (see design disciplines below). In some cases, the direct construction of an object (as in pottery, engineering, management, coding, and graphic design) is also considered to use design thinking.
Graphic Design
Graphic design is the process of visual communication and problem-solving using one or more of typography, photography and illustration. The field is considered a subset of visual communication and communication design, but sometimes the term "graphic design" is used synonymously. Graphic designers create and combine symbols, images and text to form visual representations of ideas and messages. They use typography, visual arts and page layout techniques to create visual compositions. Common uses of graphic design include corporate design (logos and branding), editorial design (magazines, newspapers and books), wayfinding or environmental design, advertising, web design, communication design, product packaging and signage.
Illustration
An illustration is a decoration, interpretation or visual explanation of a text, concept or process, designed for integration in published media, such as posters, flyers, magazines, books, teaching materials, animations, video games and films.
Illustration
Even if you can't draw, do a little doodle or rip an illustration from a magazine - these visuals will help bring your idea to life.
John Emmerling in: Sujitha Sundaram Doodling is fun, seriously, Sakal Times, 18 June 2014.
Illustration
Gravitation: The tendency of all bodies to approach one another with a strength proportion to the quantity of matter they contain --the quantity of matter they contain being ascertained by the strength of their tendency to approach one another. This is a lovely and edifying illustration of how science, having made A the proof of B, makes B the proof of A.
Ambrose Bierce , Humanizing Psychiatry: The Biocognitive Model, Future Psychiatry Press, 2009, p. 57.
Design
Design is redesign.
Jan Michl (2002), in "On seeing design as redesign" (Scandinavian Journal of Design History 12, 2002: 7-23.)