guttate vs splotchy

guttate

adj
  • Spotted. 

  • Shaped like, or resembling drops. 

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

splotchy

adj
  • marked or covered with large, irregular spots 

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