bestud vs stipple

bestud

verb
  • To set with or as with studs; adorn with bosses. 

stipple

noun
  • The use of small dots that give the appearance of shading; the dots thus used. 

verb
  • To use small dots to give the appearance of shading to. 

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