levigate vs slickered

levigate

adj
  • Smooth. 

  • Made less harsh or burdensome; alleviated. 

verb
  • To separate finer grains from coarser ones by suspension in a liquid. 

  • To make smooth or polish. 

  • To lighten. 

  • To belittle. 

  • To make into a smooth paste or fine powder. 

slickered

adj
  • Smooth and shiny. 

  • Wearing a slicker (coat) 

  • Dressed in a stylish and fancy manner. 

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