at ease vs frozen

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. 

frozen

adj
  • In a state such that transactions are not allowed. 

  • Having undergone the process of freezing; in ice form. 

  • Retaining an older, obsolete syntax of an earlier version of a language, which now operates only on a specific word or phrase. 

  • Immobilized. 

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