piton vs scotch

piton

noun
  • A spike, wedge, or peg that is driven into a rock or ice surface as a support (as for a mountain climber). 

verb
  • To put pitons into a rock/ice to facilitate climbing. 

scotch

noun
  • A block for a wheel or other round object; a chock, wedge, prop, or other support, to prevent slipping. 

  • A line drawn on the ground, as one used in playing hopscotch. 

  • Scotch tape 

  • A surface cut or abrasion. 

verb
  • To debunk or discredit an idea or rumor. 

  • To beat yarn in order to break up slugs and align the threads. 

  • To rape. 

  • To prevent (something) from being successful. 

  • To dress (stone) with a pick or pointed instrument. 

  • To block a wheel or other round object. 

  • To cut or score; to wound superficially. 

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