hairline vs prune

hairline

noun
  • A very thin fissure. 

  • 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. 

adj
  • very thin, as thin as a hair 

prune

noun
  • Something wrinkly like a prune. 

  • The dried, wrinkled fruit of certain species of plum. 

  • An old woman, especially a wrinkly one. 

verb
  • To cut down or shorten (by the removal of unnecessary material). 

  • To remove excess material from a tree or shrub; to trim, especially to make more healthy or productive. 

  • To remove unnecessary branches from a tree data structure. 

  • To become wrinkled like a dried plum, as the fingers and toes do when kept submerged in water. 

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