flimsy vs hairline

flimsy

noun
  • Thin typing paper used to make multiple copies. 

  • A banknote. 

  • Skimpy underwear. 

  • A service certificate 

adj
  • Likely to bend or break under pressure. 

  • Weak; ill-founded. 

hairline

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

  • A fishing line made from hair. 

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

  • A very thin fissure. 

adj
  • very thin, as thin as a hair 

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