discolored vs guttate

discolored

adj
  • Deprived of color, or given the wrong color; pale, stained. 

guttate

adj
  • Shaped like, or resembling drops. 

  • Spotted. 

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

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