at ease vs vulnerable

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. 

vulnerable

adj
  • Open to disclosing one's inner thoughts and feelings, acting in spite of one's instinct to self-preservation. 

  • More likely to be exposed to malicious programs or viruses. 

  • More or most likely to be exposed to the chance of being attacked or harmed, either physically or emotionally. 

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