asking vs soliciting

asking

noun
  • The act or process of posing a question or making a request. 

  • The marriage banns. 

  • A request, or petition. 

adj
  • That asks; that expresses a question or request. 

soliciting

noun
  • The act of one who solicits. 

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