teeter vs titubate

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. 

titubate

verb

  • To stutter, stammer. 

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