bony vs hairline

bony

adj
  • with little flesh; skinny, thin 

  • full of bones 

  • having prominent bones 

  • resembling, having the appearance or consistence of, or relating to bone; osseous. 

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 bony and hairline occurred in a corpus of books? (source: Google Ngram Viewer )