nonplus vs teeter

nonplus

verb
  • To bewilder or perplex (someone); to confound, to flummox. 

noun
  • A state of bewilderment or perplexity. 

teeter

verb
  • To be indecisive. 

  • To be close to becoming a typically negative situation. 

  • To tilt back and forth on an edge. 

noun
  • A teeter-totter or seesaw. 

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