cognizant vs unsteady

cognizant

adj
  • Aware; fully informed; having understanding of a fact. 

  • Sapient; self-aware. 

unsteady

verb
  • To render unsteady, removing balance. 

adj
  • Inconstant in purpose, or volatile in behavior. 

  • Lacking regularity or uniformity. 

  • Not held firmly in position, physically unstable. 

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