piebald vs specked

piebald

adj
  • Spotted or blotched, especially in black and white. 

  • Of mixed character, heterogeneous. 

noun
  • An animal with piebald coloration. 

specked

adj
  • Having specks or spots, speckled. 

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