go to seed vs veg out

go to seed

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

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

veg out

verb
  • To relax in a slack attitude, not moving much. 

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