grime vs slotter

grime

verb
  • To begrime; to cake with dirt. 

noun
  • Dirt, grease, soot, etc. that is ingrained and difficult to remove. 

  • A genre of urban music that emerged in London, England, in the early 2000s, primarily a development of UK garage, dancehall, and hip hop. 

slotter

verb
  • To make filthy; to foul. 

noun
  • Filth. 

  • A tool used to make a mortise, or to shape the sides of an aperture. 

  • Such a tool that is much like a shaper but with a smaller ram, vertically mounted. 

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