at ease vs restive

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. 

restive

adj
  • Impatient under delay, duress, or control. 

  • Refusing to move, especially in a forward direction. 

  • Resistant to control; stubborn. 

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