What is the meaning of roughness?

noun

• A texture of a surface or edge that is not smooth but is irregular and uneven.
  • synonyms: raggedness
• The quality of being unpleasant (harsh or rough or grating) to the senses.
  • synonyms: harshness
• An unpolished unrefined quality.
  • usage: "the crudeness of frontier dwellings depressed her"
  • synonyms: crudeness
• Used of the sea during inclement or stormy weather.
  • synonyms: choppiness, rough water
• Rowdy behavior.
  • synonyms: rowdiness, rowdyism, disorderliness
• The formation of small pits in a surface as a consequence of corrosion.
  • synonyms: pitting, indentation
• Harsh or severe speech or behavior.
  • usage: "men associate the roughness of nonstandard working-class speech with masculinity"; "the roughness of her voice was a signal to keep quiet"