heedful vs solicitous

heedful

adj
  • Taking heed. 

  • Paying close attention; mindful. 

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 heedful and solicitous occurred in a corpus of books? (source: Google Ngram Viewer )