General Roughness:
* Roughness: This is the most direct translation.
* Texture: This emphasizes the surface quality.
* Asperity: This implies a harsh or uneven quality.
Specific Types of Roughness:
* Bumps: For physical bumps on a surface.
* Jaggedness: For a sharp, uneven edge.
* Grain: For the texture of wood or other materials.
* Grit: For a rough, abrasive quality.
* Unevenness: For a surface that is not smooth.
* Roughness: For a surface that is not smooth.
Abstract Roughness:
* Hardship: For a difficult or unpleasant experience.
* Turbulence: For a state of unrest or chaos.
The best noun to use will depend on the specific situation and what aspect of "rough" you want to emphasize.