pluck vs spine

pluck

noun
  • An instance of plucking or pulling sharply. 

  • Guts, nerve, fortitude or persistence. 

  • The lungs, heart with trachea and often oesophagus removed from slaughtered animals. 

  • Cheap wine. 

verb
  • To take or remove (someone) quickly from a particular place or situation. 

  • To pull something sharply; to pull something out 

  • To pull or twitch sharply. 

  • To remove feathers from a bird. 

  • To play a string instrument pizzicato. 

  • To gently play a single string, e.g. on a guitar, violin etc. 

  • Of a glacier: to transport individual pieces of bedrock by means of gradual erosion through freezing and thawing. 

spine

noun
  • The stiffness of an arrow. 

  • Courage or assertiveness. 

  • The narrow, bound edge of a book that encloses the inner edges of the pages, facing outwards when the book is on a shelf and typically bearing the title and the author's and publisher's name. 

  • The heartwood of trees. 

  • A pointed, fairly rigid protuberance or needlelike structure on an animal, shell, or plant. 

  • Something resembling a backbone, such as a ridge, or a long, central structure from which other structures radiate. 

  • A series of bones situated at the back from the head to the pelvis of a human, or from the head to the tail of an animal, enclosing the spinal cord and providing support for the thorax and abdomen. 

  • A linear payscale operated by some large organizations that allows flexibility for local and specific conditions. 

  • A tall mass of viscous lava extruded from a volcano. 

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