hairline vs minuscule

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. 

minuscule

adj
  • Very small; tiny. 

  • Written in minuscule handwriting style. 

  • Written in minuscules, lowercase. 

noun
  • A lowercase letter. 

  • Either of the two medieval handwriting styles minuscule cursive and Caroline minuscule. 

  • A letter in these styles. 

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