pencil-thin vs supple

pencil-thin

adj
  • Somewhat cylindrical and slender like a pencil; also, tall and thin. 

supple

adj
  • Pliant, flexible, easy to bend. 

  • Lithe and agile when moving and bending. 

  • Compliant; yielding to the will of others. 

verb
  • To make or become supple. 

  • To make compliant, submissive, or obedient. 

How often have the words pencil-thin and supple occurred in a corpus of books? (source: Google Ngram Viewer )