negligible vs on the edge

negligible

adj
  • Able to be neglected, ignored or excluded from consideration; too small or unimportant to be of concern. 

on the edge

prep
  • With figurative or temporal proximity to (an event, state of mind, etc.). 

  • In a state of excitement due to taking risks. 

  • In a precarious position, with one's recourses nearly exhausted. 

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