WordWeb Online

1. Language or humour that is down-to-earth
   "the coarseness of their language was inappropriate";
   - saltiness
    
2. The quality of being composed of relatively large particles
   - graininess, granularity
    
3. Looseness or roughness in texture (as of cloth)
   - nubbiness, tweediness
    
4. The quality of lacking taste and refinement
   "in the twilight zone between humour and coarseness";
   - commonness, grossness, vulgarity, vulgarism, raunch

Type of: expressive style, inelegance, raggedness, roughness, style