hairline vs polish

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 

polish

noun
  • A substance used to polish. 

  • Refinement; cleanliness in performance or presentation. 

  • Cleanliness; smoothness, shininess. 

verb
  • To refine; to wear off the rudeness, coarseness, or rusticity of; to make elegant and polite. 

  • To apply shoe polish to shoes. 

  • To become smooth, as from friction; to receive a gloss; to take a smooth and glossy surface. 

  • To shine; to make a surface very smooth or shiny by rubbing, cleaning, or grinding. 

  • To refine; remove imperfections from. 

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