knowledgeful vs learned

knowledgeful

adj
  • Full of knowledge; knowledgeable. 

learned

adj
  • Having much learning, knowledgeable, erudite; highly educated. 

  • Derived from experience; acquired by learning. 

  • Scholarly, exhibiting scholarship. 

  • A courteous description used in various ways to refer to lawyers or judges. 

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