kill time vs slummock

kill time

verb
  • To engage in an activity whose only purpose is to make the time seem to pass more quickly; to fill the time between activities. 

slummock

verb
  • To behave lazily or indolently 

  • To behave awkwardly or clumsily 

noun
  • A slovenly person 

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