at ease vs disturbed

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. 

disturbed

adj
  • Showing symptoms of mental illness, severe psychosis, or neurosis. 

  • Extremely alarmed; shocked. 

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