precarious vs unsteady

precarious

adj
  • Dangerously insecure or unstable; perilous. 

  • Relating to incipient caries. 

  • Depending on the intention of another. 

unsteady

adj
  • Inconstant in purpose, or volatile in behavior. 

  • Lacking regularity or uniformity. 

  • Not held firmly in position, physically unstable. 

verb
  • To render unsteady, removing balance. 

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