hairline vs sad

hairline

adj
  • very thin, as thin as a hair 

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. 

sad

adj
  • Of colours: dark, deep; later, sombre, dull. 

  • Soggy (to refer to pastries). 

  • Causing sorrow; lamentable. 

  • Appearing sorrowful. 

  • Feeling sorrow; sorrowful, mournful. 

  • Poor in quality, bad; shameful, deplorable; later, regrettable, poor. 

  • Unfashionable; socially inadequate or undesirable. 

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