japer vs slubberdegullion

japer

noun
  • One who japes; a joker. 

slubberdegullion

noun
  • A filthy, slobbering person; a sloven, a villain, a fiend, a louse. 

  • A drunken or alcoholic person. 

  • A worthless person. 

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