dapple vs speckle

dapple

verb
  • To mark or become marked with mottling or spots. 

adj
  • Having a mottled or spotted skin or coat, dappled. 

noun
  • A mottled marking, usually in clusters. 

  • An animal with a mottled or spotted skin or coat. 

speckle

verb
  • To mark with speckles. 

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. 

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