athirst vs solicitous

athirst

adj
  • Eager or extremely desirous (for something). 

solicitous

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

  • In an anxious or distressed way. 

  • In an eager way. 

  • In a conscientious way, often with kindness. 

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