apprehensive vs uneasy

apprehensive

adj
  • Anticipating something with anxiety, fear, or doubt; reluctant. 

uneasy

adj
  • Restless; disturbed by pain, anxiety 

  • I've been uneasy about your friend ever since I met him. Are you sure we can trust him? 

  • Not easy; difficult. 

  • Causing discomfort or constraint 

  • Not easy in manner; constrained 

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