hairline vs sensitive

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 

sensitive

adj
  • Having the faculty of sensation; pertaining to the senses. 

  • Responsive to stimuli. 

  • Easily offended, upset, or hurt. 

  • Important, intricate, and requiring great delicacy. 

  • Capable of offending, upsetting, or hurting. 

  • Accurate; able to register small changes in some property. 

  • Meant to be concealed or kept secret. 

noun
  • A person with a paranormal sensitivity to something that most cannot perceive. 

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