apprehensive vs solicitous

apprehensive

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

solicitous

adj
  • In an anxious or distressed way. 

  • In an eager way. 

  • In a conscientious way, often with kindness. 

  • Disposed to solicit; eager to obtain something desirable, or to avoid anything evil. 

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