gobshite vs slummock

gobshite

noun
  • A person of very poor judgment and unpleasant character. 

  • One who engages in nonsensical chatter or unwanted conversation. 

slummock

noun
  • A slovenly person 

verb
  • To behave awkwardly or clumsily 

  • To behave lazily or indolently 

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