Blank opposite elements like large and small shapes, geometric straight shapes, and organic curve shapes. Rough and smooth textures. Et cetera are called what?

The blank opposite elements where one element contrasts with another, such as large and small shapes, geometric straight shapes and organic curve shapes, rough and smooth textures, are called juxtaposition or contrasting elements.

The term used to describe opposite elements like large and small shapes, geometric straight shapes, organic curve shapes, rough and smooth textures, and so on, is called "contrast."