finespun vs hairline

finespun

adj
  • delicate and subtle, with fine detail 

  • spun into a fine thread 

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. 

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