Answer:
Organic shapes; geometric shapes
Explanation:
There are two general categories used to describe shapes: Geometric and Organic Shapes.
Geometric Shapes are precise, can be defined using mathematical expressions, and are easy to measure. They are usually found in manufactured, not natural, items. Examples: squares, rectangles, and circles.
Organic Shapes tend to be soft, curvilinear, and irregular, all characteristics of living beings or elements found in nature.