levigate vs spackle

levigate

verb
  • To make into a smooth paste or fine powder. 

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

  • To make smooth or polish. 

  • To lighten. 

  • To belittle. 

adj
  • Smooth. 

  • Made less harsh or burdensome; alleviated. 

spackle

verb
  • To fill or repair with a plastic paste. 

  • To fill gaps with something, as if spackling; to speckle 

  • To fill cracks or holes with a spackle. 

noun
  • Any powder (originally containing gypsum plaster and glue) that when mixed with water forms a plastic paste, which is used to fill cracks and holes in plaster. 

  • A plastic paste meant for filling cracks and holes in plaster. 

  • A paste-like substance that fills a gap. 

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