solicitous vs thoughtful

solicitous

adj
  • In a conscientious way, often with kindness. 

  • In an anxious or distressed way. 

  • In an eager way. 

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

thoughtful

adj
  • Demonstrating kindness or consideration for others. 

  • Demonstrating thought or careful consideration. 

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