pock vs speckle

pock

noun
  • Any pit, especially one formed as a scar 

  • A pus-filled swelling on the surface on the skin caused by an eruptive disease. 

verb
  • To scar or mark with pits 

speckle

noun
  • A small spot or speck on the skin, plumage or foliage. 

  • Kind; sort. 

  • A cluster of interchromatin granules in a nucleus. 

  • The random distribution of light when it is scattered by a rough surface. 

verb
  • To mark with speckles. 

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