guttate vs skewbald

guttate

adj
  • Spotted. 

  • Shaped like, or resembling drops. 

verb
  • To exude drops of xylem sap on the edges of leaves. 

skewbald

adj
  • Marked with patches of white and non-black colours. 

noun
  • A skewbald horse. 

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