at ease vs unbalanced

at ease

prep
  • Allowed to refrain from being in rigid formation. 

  • Free of anxiety; not stressed or tense. 

  • In a relaxed position with the feet apart rather than at attention. 

unbalanced

adj
  • irrational or mentally deranged 

  • of an expression having different numbers of left and right parentheses 

  • not adjusted such that debit and credit correspond 

  • not balanced, without equilibrium; dizzy 

  • an offensive line with more players on one side of the center than on the other 

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