at ease vs suspicious

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. 

suspicious

adj
  • Arousing suspicion. 

  • Distrustful or tending to suspect. 

  • Expressing suspicion 

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