faff vs slummock

faff

verb
  • To waste time on an unproductive activity. 

noun
  • A state of confused or frantic activity. 

  • An overcomplicated task, especially one perceived as a waste of time. 

slummock

verb
  • To behave lazily or indolently 

  • To behave awkwardly or clumsily 

noun
  • A slovenly person 

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