coarse vs hairline

coarse

adj
  • Composed of large particles. 

  • Lacking refinement, taste or delicacy. 

  • Of inferior quality. 

  • With a rough texture; not smooth. 

hairline

noun
  • A fishing line made from hair. 

  • The line along one's forehead where hair starts growing. 

  • A very thin line in writing, drawing, or typography. 

  • A very thin fissure. 

adj
  • very thin, as thin as a hair 

How often have the words coarse and hairline occurred in a corpus of books? (source: Google Ngram Viewer )