stencil vs yardstick

stencil

noun
  • A two-ply master sheet for use with a mimeograph. 

  • A thin sheet, either perforated or using some other technique, with which a pattern may be produced upon a surface; a utensil that contains a perforated sheet. 

  • A pattern produced using such a utensil. 

verb
  • To print with a stencil. 

yardstick

noun
  • A measuring rod thirty-six inches (one yard) long. 

  • A standard to which other measurements or comparisons are judged. 

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