This document defines and compares geometric and organic patterns. Geometric patterns consist of lines and shapes like triangles and circles arranged in a repeated fashion, while organic patterns use irregular, nature-inspired shapes that are difficult to define mathematically. Some key differences are that organic shapes are found in nature rather than designed by humans, and do not have the uniform measurements of geometric shapes which are man-made using straight lines and regular forms. The document provides examples of both pattern types and references for further information.