mottle vs splatch

mottle

noun
  • A distinguishing blotch of color. 

  • A mottled coloration or pattern. 

verb
  • To mark with blotches of different color, or shades of color, as if stained; to spot; to maculate. 

splatch

noun
  • A blot or splash. 

verb
  • To move in a manner that causes splashing or spreading of material. 

  • To manipulate roughly or crudely. 

  • To mark with a splatch. 

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