changeless vs unsteady

changeless

adj
  • unchanging 

unsteady

adj
  • Lacking regularity or uniformity. 

  • Inconstant in purpose, or volatile in behavior. 

  • Not held firmly in position, physically unstable. 

verb
  • To render unsteady, removing balance. 

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