kindly vs solicitous

kindly

adj
  • Having a kind personality; kind, warmhearted, sympathetic. 

adv
  • Kind of, somewhat. 

  • In a kind manner, out of kindness. 

  • In a favourable way. 

  • With kind acceptance; used with take. 

  • Used to make a polite request: please. 

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. 

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