go to seed vs slummock

go to seed

verb
  • To deteriorate; to decline into an unkempt or debased condition. 

  • To pass from flowering or ripening to the formation of seeds. 

slummock

verb
  • To behave lazily or indolently 

  • To behave awkwardly or clumsily 

noun
  • A slovenly person 

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