screw off vs slummock

screw off

verb
  • To fail to do one's work; to goof off. 

  • To leave; to bugger off. 

  • To remove the lid of a jar or other container by unscrewing it. 

intj
  • To tell someone to leave or to stop being bothersome. 

  • An expression of surprise or disbelief. 

slummock

verb
  • To behave lazily or indolently 

  • To behave awkwardly or clumsily 

noun
  • A slovenly person 

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